Add export of metadata in XMP Sidecar (#984) #1237

Job	Run time
skip_check	5s
get_version	5s
type_check (3.8)	31s
lint (3.8)	22s
lint (3.9)	22s
lint (3.10)	23s
type_check (3.9)	32s
lint (3.11)	24s
type_check (3.10)	35s
lint (3.12)	23s
type_check (3.11)	33s
type_check (3.12)	36s
patch_version / patch_version	6s
extract_changelog / extract_changelog	5s
test (3.8)	48s
test_non_linux (3.12, macos-13)	58s
test (3.9)	1m 5s
test_non_linux (3.12, macos-14)	36s
test (3.10)	47s
test_non_linux (3.12, windows-2019)	2m 35s
test (3.11)	47s
test_non_linux (3.12, windows-2022)	2m 13s
test (3.12)	1m 1s
	15m 52s

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