chore: Adds semantic PR title validation (#23) #84

Job	Run time
check-libraries / check-libraries	3s
integration-test / integration-test	35m 50s
lint-report / lint-report	31s
static-analysis / static-analysis	41s
unit-tests-with-coverage / unit-tests	44s
Publish Charm / publish-charm	55s
	38m 44s

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