Bump version to v3.0.0 & add release notes #3600

Job	Run time
reusable_docker_tests / docker-test	1m 42s
reusable_tests / asan	3m 28s
reusable_tests / multiplatform-tests (Release, ubuntu-22.04)	3m 31s
reusable_tests / tsan	4m 22s
reusable_tests / multiplatform-tests (Release, ubuntu-24.04)	3m 33s
reusable_tests / multiplatform-tests (Release, windows-2019)	9m 49s
reusable_tests / multiplatform-tests (Release, windows-2022)	14m 17s
reusable_tests / coverage	3m 48s
reusable_tests / clang	1m 32s
reusable_tests / multiplatform-tests (Debug, ubuntu-22.04)	3m 41s
reusable_tests / multiplatform-tests (Debug, ubuntu-24.04)	3m 22s
reusable_tests / multiplatform-tests (Debug, windows-2019)	9m 52s
reusable_tests / docs	45s
reusable_tests / multiplatform-tests (Debug, windows-2022)	11m 14s
reusable_tests / flaky	1m 36s
reusable_tests / python-linter	12s
reusable_tests / uncrustify	33s
	1h 17m 17s

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