Add ZAP helper for detecting fabric-scoped structs.

[bzbarsky-apple]

We want to condition some codegen on whether a type is a fabric-scoped
struct.

Problem

Can't do special fabric-y things for fabric-scoped stuff easily in codegen.

Change overview

Add a way to do it ... if not easily, then at least somewhat.

Testing

Checked that if I do this for event fields it catches just the ACL event bits that use fabric-scoped structs.

[github-actions]

PR #15281: Size comparison from 72896fc to 89ec203

Full report (34 builds for cyw30739, efr32, esp32, k32w, linux, mbed, nrfconnect, p6, qpg, telink)

platform	target	config	section	72896fc	89ec203	change	% change
cyw30739	light	cyw930739m2evb_01	(read/write)	597326	597326	0	0.0
			.app_xip_area	501244	501244	0	0.0
			.bss	78780	78780	0	0.0
			.data	644	644	0	0.0
			.rodata	0	0	0	0.0
			.text	0	0	0	0.0
	lock	cyw930739m2evb_01	(read/write)	555266	555266	0	0.0
			.app_xip_area	460752	460752	0	0.0
			.bss	77252	77252	0	0.0
			.data	608	608	0	0.0
			.rodata	0	0	0	0.0
			.text	0	0	0	0.0
	ota-requestor	cyw930739m2evb_01	(read/write)	576378	576378	0	0.0
			.app_xip_area	472432	472432	0	0.0
			.bss	86356	86356	0	0.0
			.data	552	552	0	0.0
			.rodata	0	0	0	0.0
			.text	112	112	0	0.0
efr32	lighting-app	BRD4161A	(read only)	914204	914204	0	0.0
			(read/write)	129524	129524	0	0.0
			.bss	127488	127488	0	0.0
			.data	2036	2036	0	0.0
			.text	914196	914196	0	0.0
		BRD4161A+rpc	(read only)	942896	942896	0	0.0
			(read/write)	146440	146440	0	0.0
			.bss	144264	144264	0	0.0
			.data	2176	2176	0	0.0
			.text	942888	942888	0	0.0
	window-app	BRD4161A	(read only)	848064	848064	0	0.0
			(read/write)	127416	127416	0	0.0
			.bss	125512	125512	0	0.0
			.data	1904	1904	0	0.0
			.text	848056	848056	0	0.0
esp32	all-clusters-app	c3devkit	(read only)	947660	947660	0	0.0
			(read/write)	1401170	1401170	0	0.0
			.dram0.bss	68296	68296	0	0.0
			.dram0.data	14268	14268	0	0.0
			.flash.rodata	199704	199704	0	0.0
			.flash.text	947660	947660	0	0.0
			.iram0.text	62056	62056	0	0.0
		m5stack	(read only)	997411	997411	0	0.0
			(read/write)	466412	466412	0	0.0
			.dram0.bss	73432	73432	0	0.0
			.dram0.data	34064	34064	0	0.0
			.flash.rodata	226788	226788	0	0.0
			.flash.text	992027	992027	0	0.0
			.iram0.text	123399	123399	0	0.0
k32w	light	k32w061+release	(read/write)	691332	691332	0	0.0
			.bss	78384	78384	0	0.0
			.data	1912	1912	0	0.0
			.text	605236	605236	0	0.0
	lock	k32w061+release	(read/write)	693964	693964	0	0.0
			.bss	78600	78600	0	0.0
			.data	1952	1952	0	0.0
			.text	607612	607612	0	0.0
linux	chip-tool-ipv6only	arm64	(read only)	8332420	8332420	0	0.0
			(read/write)	362609	362609	0	0.0
			.bss	58961	58961	0	0.0
			.data	1216	1216	0	0.0
			.data.rel.ro	249368	249368	0	0.0
			.dynamic	560	560	0	0.0
			.got	49272	49272	0	0.0
			.init	24	24	0	0.0
			.init_array	200	200	0	0.0
			.rodata	435804	435804	0	0.0
			.text	7133924	7133924	0	0.0
	thermostat-no-ble	arm64	(read only)	2162268	2162268	0	0.0
			(read/write)	150737	150737	0	0.0
			.bss	67489	67489	0	0.0
			.data	1032	1032	0	0.0
			.data.rel.ro	75024	75024	0	0.0
			.dynamic	560	560	0	0.0
			.got	4208	4208	0	0.0
			.init	24	24	0	0.0
			.init_array	336	336	0	0.0
			.rodata	133580	133580	0	0.0
			.text	1810064	1810064	0	0.0
mbed	all-clusters-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2428444	2428444	0	0.0
			.bss	195916	195916	0	0.0
			.data	5328	5328	0	0.0
			.text	1391016	1391016	0	0.0
	lighting-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2391644	2391644	0	0.0
			.bss	188448	188448	0	0.0
			.data	5632	5632	0	0.0
			.text	1354216	1354216	0	0.0
	lock-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2327080	2327080	0	0.0
			.bss	187424	187424	0	0.0
			.data	5608	5608	0	0.0
			.text	1289680	1289680	0	0.0
	pigweed-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	1139840	1139840	0	0.0
			.bss	11796	11796	0	0.0
			.data	4368	4368	0	0.0
			.text	103224	103224	0	0.0
	shell	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2317916	2317916	0	0.0
			.bss	185972	185972	0	0.0
			.data	5440	5440	0	0.0
			.text	1280488	1280488	0	0.0
nrfconnect	lighting-app	nrf52840dk_nrf52840	(read/write)	1022279	1022279	0	0.0
			bss	123548	123548	0	0.0
			rodata	120660	120660	0	0.0
			text	699076	699076	0	0.0
		nrf52840dk_nrf52840+rpc	(read/write)	991571	991571	0	0.0
			bss	120736	120736	0	0.0
			rodata	112184	112184	0	0.0
			text	678976	678976	0	0.0
		nrf52840dongle_nrf52840	(read/write)	1037095	1037095	0	0.0
			bss	124768	124768	0	0.0
			rodata	119472	119472	0	0.0
			text	702968	702968	0	0.0
		nrf5340dk_nrf5340_cpuapp	(read/write)	928890	928890	0	0.0
			bss	120112	120112	0	0.0
			rodata	113900	113900	0	0.0
			text	614088	614088	0	0.0
	lock-app	nrf52840dk_nrf52840	(read/write)	950983	950983	0	0.0
			bss	121752	121752	0	0.0
			rodata	109356	109356	0	0.0
			text	641268	641268	0	0.0
		nrf5340dk_nrf5340_cpuapp	(read/write)	858442	858442	0	0.0
			bss	118344	118344	0	0.0
			rodata	102524	102524	0	0.0
			text	557056	557056	0	0.0
	pigweed-app	nrf52840dk_nrf52840	(read/write)	527595	527595	0	0.0
			bss	53632	53632	0	0.0
			rodata	49976	49976	0	0.0
			text	361016	361016	0	0.0
	pump-app	nrf52840dk_nrf52840	(read/write)	949431	949431	0	0.0
			bss	121472	121472	0	0.0
			rodata	108308	108308	0	0.0
			text	641088	641088	0	0.0
	pump-controller-app	nrf52840dk_nrf52840	(read/write)	945519	945519	0	0.0
			bss	121476	121476	0	0.0
			rodata	108004	108004	0	0.0
			text	637328	637328	0	0.0
	shell	nrf52840dk_nrf52840	(read/write)	810767	810767	0	0.0
			bss	113324	113324	0	0.0
			rodata	79348	79348	0	0.0
			text	540444	540444	0	0.0
p6	all-clusters-app	default	(read/write)	2485928	2485928	0	0.0
			.bss	124232	124232	0	0.0
			.data	2672	2672	0	0.0
			.text	1444192	1444192	0	0.0
	light-app	default	(read/write)	2392816	2392816	0	0.0
			.bss	113912	113912	0	0.0
			.data	2528	2528	0	0.0
			.text	1351080	1351080	0	0.0
	lock-app	default	(read/write)	2356280	2356280	0	0.0
			.bss	113640	113640	0	0.0
			.data	2488	2488	0	0.0
			.text	1314544	1314544	0	0.0
qpg	lighting-app	qpg6105+debug	(read only)	598816	598816	0	0.0
			(read/write)	146940	146940	0	0.0
			.bss	90744	90744	0	0.0
			.data	1112	1112	0	0.0
			.text	593496	593496	0	0.0
	lock-app	qpg6105+debug	(read only)	564440	564440	0	0.0
			(read/write)	146940	146940	0	0.0
			.bss	90728	90728	0	0.0
			.data	1064	1064	0	0.0
			.text	559120	559120	0	0.0
	persistent-storage-app	qpg6105+debug	(read only)	99520	99520	0	0.0
			(read/write)	146940	146940	0	0.0
			.bss	24004	24004	0	0.0
			.data	176	176	0	0.0
			.text	94200	94200	0	0.0
telink	lighting-app	tlsr9518adk80d	(read/write)	877618	877618	0	0.0
			bss	87520	87520	0	0.0
			noinit	37160	37160	0	0.0
			text	618038	618038	0	0.0