Move to gitlabci

Moving to Gitlab CI and minor (hopefully) changes to wording thanks to CSpell.

assigned to @rpsu

enabled automatic add to merge train when the pipeline for 151c769c succeeds

aborted automatic add to merge train because source branch was updated

added 1 commit

• f72af1e7 - Use dependency injection in classes

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added 2 commits

• d1d303ac - Add some more gitignores
• 5d72ac42 - Add tooling info to README.md

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