Migrate unused-revision-names check from tidy to compiletest

[nilotpal-n7]

From what i understand, we need to migrate the check such that it executes before running the actual tests(revisions) as the runtest::run() assumes that theres no revision/unused-revision related issue.

Implementation/Logic:

1. Declared unused_revision_names in EarlyProps.
2. Parse unused_revision_names along side revisions in lib::make_test().
3. Check unknown/unused revision before returning the final collected test in lib::make_test()

(I initially thought to implement it in TestProps then execute it in runtest::run() but that would be too late).

Tests:

1. (./x test, saved the logs in a file, then grep the panic message) -> no error/panic found(related to this) -> means previous implementations passed.
2. (I tested it using intentional errors like; same revision in //@ revision and //@ unused-revision-names, unknown revision, and the wildcard "") -> emits corrects panic/error messages and skips all check for "" -> correct output

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I've tried to keep its functioning as close to what it was in tidy as possible.

I'm not super sure if this is most optimal solution,
so any feedback on approach or potential edge cases would be very helpful.

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Issue: #144671

[rustbot]

Some changes occurred in src/tools/compiletest

cc @jieyouxu

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[rustbot]

This PR was rebased onto a different master commit. Here's a range-diff highlighting what actually changed.

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[rustbot]

Some changes occurred in src/tools/cargo

cc @ehuss

[rustbot]

⚠️ Warning ⚠️

• Some commits in this PR modify submodules.

  If this was not intentional, see I changed a submodule on accident in the rustc dev guide.