Add McpMetaAttribute for attaching metadata to tools, prompts, and resources #901

Job	Run time
build (ubuntu-latest, Debug)	1m 55s
build (ubuntu-latest, Release)	4m 47s
build (windows-latest, Release)	2m 59s
build (windows-latest, Debug)	4m 28s
build (macos-latest, Debug)	1m 56s
build (macos-latest, Release)	1m 9s
publish-coverage	0s
	17m 14s

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