Name the expected rule in the tests that annotate diagnostics

[meziantou]

[|code|] says "a diagnostic is reported here" without saying which one. For an analyzer that supports a single
rule that is unambiguous, but 15 test files use it with an analyzer that reports several rules, so the tests never
checked that the rule that fires is the one under test. EqualityShouldBeCorrectlyImplementedAnalyzerMA0077Tests
could have been reporting MA0095 everywhere and still passed.

This replaces 125 of those annotations with the {|ruleId:code|} syntax the ProjectBuilder already supports,
naming the rule the test is about. 23 rules are covered: MA0023, MA0040, MA0075, MA0076, MA0077, MA0079, MA0092,
MA0093, MA0094, MA0095, MA0107, MA0114, MA0117, MA0122, MA0135, MA0139, MA0141, MA0146, MA0148, MA0149, MA0166,
MA0207 and MA0208.

The [|code|] annotations of the tests whose analyzer supports a single rule are left alone: there is nothing to
disambiguate there.

UsePatternMatchingForEqualityComparisonsAnalyzerTests also loses four $ prefixes on interpolated strings that
interpolate nothing. They had to go for {| to be valid in the code under test, and the fixed code of the same
tests follows for consistency.

No production code is touched, and no test is added or removed.

Verification

Meziantou.Analyzer.Test.roslyn5.9: 3840 tests, 0 failures.