Enable pre-commit

Summary:
To offer a better repository linting experience,
a lot of tests can be done locally quickly.

Provide pre-commit Git hook using the pre-commit framework
with linters for Python (black), shell scripts (shellcheck),
JSON, XML, YAML, Salt states (salt-lint) and regular files.

Fixes T1715.

Test Plan:

• make
• pre-commit run --all-files

Reviewers: dereckson

Reviewed By: dereckson

Maniphest Tasks: T1715

Differential Revision: https://devcentral.nasqueron.org/D2635