Add pre-commit to automatically fix style issue before pushing commits

[eurunuela]

Closes #972.

This will be a draft until other tedana devs share their opinion and approve in #972.

Changes proposed in this pull request:

• Adds pre-commit config file
• Adds pre-commit dependency for developers
• Mentions the use of pre-commit in the contributing guidelines

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (bf3392a) 88.86% compared to head (b225bc4) 88.86%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #973   +/-   ##
=======================================
  Coverage   88.86%   88.86%           
=======================================
  Files          27       27           
  Lines        3368     3368           
  Branches      618      618           
=======================================
  Hits         2993     2993           
  Misses        227      227           
  Partials      148      148           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[handwerkerd]

You removed a dead link, but I think we should include the correct link somewhere.

Here's my suggestion:

Current line 44:
We also maintain a [Mattermost chat room][link_mattermost] for more informal conversations and general project updates.

Suggested revision:
We also maintain a [Mattermost chat room][link_mattermost] for more informal conversations and general project updates. Our general documentation also includes additional information on contributing, development philosophy, and our monthly developer calls.

(BTW, is there a way for me to make a suggested changes on lines of code that weren't revised by you? I could open a PR to your PR, but, for one-off things like this, is what I'm doing here the easiest approach?)

I also don't know how to evaluate the core functionality of this PR since I haven't worked with pre-commits before. If @tsalo has & is happy with this, I can approve. Otherwise, maybe @emdupre could take a quick look.

[eurunuela]

I'm sorry @handwerkerd, it seems like autoformatting on save changed all those things. I just reverted and saved the changes with no autoformatting this time.

[handwerkerd]

LGTM.
I hope the other reviewer is someone who has used pre-commits before and can confirm this is set up correctly.

[tsalo]

LGTM

[eurunuela]

Thank you for the feedback Taylor!