feat: determine newline to write with Git

[pan93412]

Description

Determine the newline character to write with git config core.eof.

Checklist

• [x] Add test cases to all the changes you introduce
• [x] Run ./script/format and ./script/test locally to ensure this change passes linter check and test
• [x] Test the changes on the local machine manually
• [ ] Update the documentation for the changes

Expected behavior

It will adopt the newline character from the configuration key core.elf of Git while writing to any file.

Steps to Test This Pull Request

See tests.

Additional context

Help me cc CanisHelix check this commit. Thanks!

[codecov[bot]]

Codecov Report

Merging #493 (b135f76) into master (ed636ba) will increase coverage by 0.02%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #493      +/-   ##
==========================================
+ Coverage   98.26%   98.28%   +0.02%     
==========================================
  Files          39       39              
  Lines        1556     1575      +19     
==========================================
+ Hits         1529     1548      +19     
  Misses         27       27              

Flag	Coverage Δ
unittests	98.28% <100.00%> (+0.02%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
commitizen/__version__.py	100.00% <100.00%> (ø)
commitizen/bump.py	100.00% <100.00%> (ø)
commitizen/cmd.py	100.00% <100.00%> (ø)
commitizen/commands/changelog.py	96.62% <100.00%> (+0.03%)	:arrow_up:
commitizen/commands/commit.py	98.43% <100.00%> (+0.02%)	:arrow_up:
commitizen/commands/init.py	91.66% <100.00%> (ø)
commitizen/config/json_config.py	100.00% <100.00%> (ø)
commitizen/config/yaml_config.py	100.00% <100.00%> (ø)
commitizen/git.py	100.00% <100.00%> (ø)

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[woile]

LGTM.Is there an issue associated? What's the problem that it's trying to solve?

[pan93412]

LGTM.Is there an issue associated? What's the problem that it's trying to solve?

I think it is https://github.com/commitizen-tools/commitizen/issues/492. I'll look into the conflict later.

[Lee-W]

I notice there's a conflict. Could you please rebase and resolve it? If you don't have the time to do so. I'm happy to work on it next week :)

[pan93412]

@Lee-W resolved ;) thanks!

[Lee-W]

@pan93412 Sorry for taking so long. Thanks for your contribution! Let's merge it 🎉