Add deprecation warnings #276

Job	Run time
Construct Examples matrix	4s
Soundness / Swift license headers check	7s
Soundness / Check generated code	1m 12s
Unit tests / Construct unit test matrix	5s
Soundness / Check imports have access level	6s
Benchmarks / Construct Benchmarks matrix	4s
Cxx interop / Construct Cxx interop matrix	4s
Soundness / Unacceptable language check	6s
Soundness / Broken symlinks check	4s
Soundness / YAML lint check	4s
Soundness / Python lint check	6s
Soundness / Format check	34s
Soundness / API breakage check	1m 22s
Soundness / Shell check	38s
Soundness / Documentation check	1m 33s
Soundness / License headers check	5s
Static SDK / Static SDK / Linux (latest-release Jammy)	1m 43s
Static SDK / Static SDK / Linux (main Jammy)	2m 9s
Examples / Linux (6.0)	23m 51s
Examples / Linux (nightly-main)	29m 23s
Examples / Linux (nightly-next)	29m 43s
Examples / Linux (6.1)	22m 4s
Benchmarks / Benchmarks / Linux (nightly-next)	2m 53s
Benchmarks / Benchmarks / Linux (nightly-main)	2m 43s
Benchmarks / Benchmarks / Linux (6.1)	2m 17s
Benchmarks / Benchmarks / Linux (6.0)	2m 32s
Cxx interop / Cxx interop / Linux (6.1)	1m 12s
Cxx interop / Cxx interop / Linux (nightly-main)	1m 9s
Cxx interop / Cxx interop / Linux (nightly-next)	1m 10s
Cxx interop / Cxx interop / Linux (6.0)	1m 9s
Unit tests / Unit tests / Linux (6.1)	55s
Unit tests / Unit tests / Linux (6.0)	1m 2s
Unit tests / Unit tests / Linux (nightly-main)	2m 3s
Unit tests / Unit tests / Linux (nightly-next)	1m 59s
	2h 16m 11s

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