Added isort to pre_commit file

[kolibril13]

Changelog / Overview

As we might have https://pre-commit.ci/ activated soon, I think having isort automated is only beneficial.
Note that I did not run pre-commit install yet (https://pre-commit.com/#3-install-the-git-hook-scripts)
I got the isort script from here: https://github.com/PyCQA/isort/blob/07cf92116d1d880aa54f8e664804d9e8ffdfeb2a/docs/configuration/pre-commit.md

Motivation

Explanation for Changes

Testing Status

Further Comments

Checklist

• I have read the Contributing Guidelines
• I have written a descriptive PR title (see top of PR template for examples)
• I have written a changelog entry for the PR or deem it unnecessary
• My new functions/classes either have a docstring or are private
• My new functions/classes have tests added and (optional) examples in the docs
• My new documentation builds, looks correctly formatted, and adds no additional build warnings

Reviewer Checklist

• The PR title is descriptive enough
• The PR is labeled correctly
• The changelog entry is completed if necessary
• Newly added functions/classes either have a docstring or are private
• Newly added functions/classes have tests added and (optional) examples in the docs
• Newly added documentation builds, looks correctly formatted, and adds no additional build warnings

[RickyC0626]

Looks good 👍🏻