commit-message.ts

* fix: introduce class SemanticCommitMessage

* fix: introduce class AbstractCommitMessage

* fix: use commit message model

* fix: clean extra whitespaces

* fix: test coverage

* fix: fix build

* fix: unit test

* fix: by comments

* fix: cover case without prefix by unit tests

* fix: coverage

* fix: regexp

* fix: revert options changes

* fix: update commit message model

* fix: add unit test

* fix: add new getter to commit message model

* fix: add unit test

* fix: update by comments

Co-authored-by: Rhys Arkins <rhys@arkins.net>
Co-authored-by: Michael Kriese <michael.kriese@visualon.de>