Introduce pre-commit-hooks

Hooks to be introduced

• Introduce pre-commit-hooks
• Introduce mdformat

GitLab CI

• Use pre-commit run -a $hook
• Merge all minor pre-commit hooks into one job

changed milestone to %1.2.0

added CI/CD Dev Env labels

marked this issue as related to #198

changed title from Introduce pre-commit-hooks pre-commit hooks to Introduce pre-commit-hooks

changed the description

marked the checklist item Introduce pre-commit-hooks as completed

marked the checklist item Introduce mdformat as completed

assigned to @moul

mentioned in commit 0063236a

mentioned in commit 924f32ea

mentioned in commit f932da45

mentioned in commit 8de96c12

mentioned in merge request !183 (merged)

mentioned in commit 4a93509b

mentioned in commit f5ef603d

mentioned in commit 3a214de4

mentioned in commit e1f34693

mentioned in commit 836ded5e

mentioned in commit 16d85a99

mentioned in commit 02cb8758