Add swiftTestingTestCaseNames rule

[calda]

This PR adds a new swiftTestingTestCaseNames rule to remove any "test" prefix from Swift Testing test cases. Unlike in XCTest, Swift Testing test cases don't need to be prefixed with "test".

  import Testing

  struct MyFeatureTests {
-     @Test func testMyFeatureHasNoBugs() {
+     @Test func myFeatureHasNoBugs() {
          let myFeature = MyFeature()
          myFeature.runAction()
          #expect(!myFeature.hasBugs, "My feature has no bugs")
          #expect(myFeature.crashes.isEmpty, "My feature doesn't crash")
          #expect(myFeature.crashReport == nil)
      }
  }

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.55%. Comparing base (bf5e04e) to head (553e6c2).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1979      +/-   ##
===========================================
+ Coverage    95.53%   95.55%   +0.01%     
===========================================
  Files          139      140       +1     
  Lines        25620    25671      +51     
===========================================
+ Hits         24477    24530      +53     
+ Misses        1143     1141       -2     

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