[Refactor] Introduce TranslatorContext (1/2) #91

Job	Run time
Compatibility test	5m 4s
Swift 6 Language Mode	0s
Example packages / Linux (5.8)	23s
Example packages / Linux (5.9)	16m 17s
Example packages / Linux (5.10)	15m 8s
Integration test / Linux (5.8)	21s
Soundness / API breakage check	2m 41s
Integration test / Linux (5.9)	1m 32s
Example packages / Linux (nightly-6.0)	23m 36s
Integration test / Linux (5.10)	1m 34s
Example packages / Linux (nightly-main)	27s
Integration test / Linux (nightly-6.0)	2m 1s
Soundness / Broken symlinks check	2s
Integration test / Linux (nightly-main)	29s
Soundness / Documentation check	1m 44s
Soundness / License headers check	5s
Soundness / Unacceptable language check	2s
Soundness / Format check	36s
Soundness / Shell check	30s
Unit tests / Unit tests / Linux (5.8)	21s
Unit tests / Unit tests / Linux (5.9)	1m 44s
Unit tests / Unit tests / Linux (5.10)	1m 38s
Unit tests / Unit tests / Linux (nightly-6.0)	2m 13s
Unit tests / Unit tests / Linux (nightly-main)	30s
	1h 18m 58s

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