Take connection operations off the UI thread (#122)

[cliffamzn]

Fixes #25554

Clicking connect in the tv-casting-app freezes the UI for a few seconds because it tries to attempt the connection on the UI thread. This puts it in an async thread so that the UI is not blocked while its trying to establish that connection.

Tested by attempting the connection and verifying it wasn't paused and still showed the right messages and connected successfully.

[github-actions]

PR #25580: Size comparison from 1f2f882 to 985bc1d

Decreases (1 build for cc32xx)

platform	target	config	section	1f2f882	985bc1d	change	% change
cc32xx	lock	CC3235SF_LAUNCHXL	.debug_info	20267469	20267468	-1	-0.0

Full report (1 build for cc32xx)

platform	target	config	section	1f2f882	985bc1d	change	% change
cc32xx	lock	CC3235SF_LAUNCHXL		0	0	0	0.0
			(read only)	644425	644425	0	0.0
			(read/write)	203688	203688	0	0.0
			.ARM.attributes	44	44	0	0.0
			.ARM.exidx	8	8	0	0.0
			.bss	197088	197088	0	0.0
			.comment	194	194	0	0.0
			.data	1480	1480	0	0.0
			.debug_abbrev	930235	930235	0	0.0
			.debug_aranges	87344	87344	0	0.0
			.debug_frame	300044	300044	0	0.0
			.debug_info	20267469	20267468	-1	-0.0
			.debug_line	2659770	2659770	0	0.0
			.debug_loc	2802853	2802853	0	0.0
			.debug_ranges	282960	282960	0	0.0
			.debug_str	3024079	3024079	0	0.0
			.ramVecs	780	780	0	0.0
			.resetVecs	64	64	0	0.0
			.rodata	105929	105929	0	0.0
			.shstrtab	232	232	0	0.0
			.stab	204	204	0	0.0
			.stabstr	441	441	0	0.0
			.stack	2048	2048	0	0.0
			.strtab	378571	378571	0	0.0
			.symtab	256624	256624	0	0.0
			.text	536372	536372	0	0.0