🔧 MAINTAIN: Add pre-commit.ci

[chrisjsewell]

https://results.pre-commit.ci will now auto-commit any file formatting updates 😄 (e.g. if you forgot to run yapf)
It will also run an auto-update PR of the pre-commit hook versions every month

[chrisjsewell]

@csadorf we cannot also add the dependencies directly to some of the other pre-commit hooks (i.e. no language: system), so it can run them too, e.g.

    -   id: dependencies
        name: Validate environment.yml
        entry: python ./utils/dependency_management.py validate-environment-yml
        language: python
        additional_dependencies:
        - click==7.1.2
        - packaging==20.3
        - pyyaml==5.1.2
        - requests==2.25.1
        - tomlkit==0.7.2
        pass_filenames: false
        files: >-
            (?x)^(
                setup.json|
                setup.py|
                utils/dependency_management.py|
                environment.yml|
            )$

[codecov]

Codecov Report

Merging #5062 (da215fc) into develop (af8a930) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop    #5062   +/-   ##
========================================
  Coverage    80.24%   80.24%           
========================================
  Files          515      515           
  Lines        36753    36753           
========================================
  Hits         29489    29489           
  Misses        7264     7264           

Flag	Coverage Δ
django	74.73% <ø> (+0.03%)	⬆️
sqlalchemy	73.64% <ø> (+0.01%)	⬆️

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[chrisjsewell]

Merging this as a no-brainer

[csadorf]

@csadorf we cannot also add the dependencies directly to some of the other pre-commit hooks (i.e. no language: system), so it can run them too, [..]

@chrisjsewell I assume you mean "we can" and in that case I'm absolutely in favor. 👍 Do you want me to create a PR or can you?