Add v0.2 release notes for GTC. #2166

Job	Run time
Pre-commit	1m 11s
Run tests	47m 39s
Run policy-related tests with GR00T & cuda12_8 deps	33m 45s
Build the docs (pre-merge)	35s
Build & push NGC image (post-merge)	-1s
	1h 23m 9s

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