(Feat): Add support for squawk

[TylerJang27]

Adds squawk, a linter for Postgres migrations. Fixes #857. See note there about line number issues. Special thanks to @fnimick for getting this started.

I tried this out on our migration files and it raised a lot of issues, particularly about indexes. Without spending too long, I'm not sure how important those issues are, but I think it's better that this is a suggest_if: config_present for the near future. The relevant code owner should do an audit of the issues and config tuning.

[trunk-io]

⏱️ 1h 17m total CI duration on this PR

Job	Cumulative Duration	Recent Runs
Linter Tests ubuntu-latest	47m	🟩 🟥 🟥
Linter Tests macOS	20m	🟩 🟩
Windows Linter Tests	3m	🟥
Trunk Check runner [linux]	3m	🟩
CodeQL-Build	2m	🟩
Repo Tests / Plugin Tests	30s	🟩
Aggregate Test Results	11s	🟩 🟥 🟥 🟥
Detect changed files	4s	🟩

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[TylerJang27]

Pending full Windows support or a response from sbdchd/squawk#374

If we don't hear anything by the end of the week I'll just disable on Windows.

[EliSchleifer]

LGTM

[trunk-staging-io]

✅ 481 passed ⋅ (learn more)

❌ 1 failed tests	status
Testing linter terrascan Linux main KnownGoodVersion > Testing linter terrascan test basic	❌

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[TylerJang27]

Windows appears to still have some additional issues. Will investigate early this week