feat(ChangesReporting): add GitHub output formatter (#6747) #29106

Job	Run time
End to end test - e2e/applied-rule-change-docblock	18s
End to end test - e2e/applied-rule-return-array-nodes	16s
End to end test - e2e/no-parallel-reflection-resolver	25s
End to end test - e2e/parallel-custom-config	18s
End to end test - e2e/parallel-reflection-resolver	16s
End to end test - e2e/applied-rule-removed-node	17s
End to end test - e2e/parallel with space	24s
End to end test - e2e/different-path-over-skip-config	25s
End to end test - e2e/invalid-paths	25s
End to end test - e2e/applied-polyfill-php80	25s
End to end test - e2e/print-new-node	17s
End to end test - e2e/only-option	18s
End to end test - e2e/only-option-quote-double-equalnone	24s
End to end test - e2e/only-option-quote-single	16s
End to end test - e2e/only-option-quote-single-bsdouble	18s
End to end test - e2e/only-option-quote-single-equalnone	17s
	5m 19s

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