feat(remote): add offline flag

[barskern]

Description

Add a --offline flag to enable running e.g. --bumped-version without contacting any external services, even if they are configured. Closes #1095.

Motivation and Context

See #1095 .

How Has This Been Tested?

Local unit and integration tests, including building and running the binary in my local repo.

NOTE! Three unrelated tests were failing when I started my implementation:

repo::test::get_latest_tag
repo::test::git_tags
repo::test::resolves_existing_tag_with_name_and_message

Screenshots / Logs (if applicable)

Types of Changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation (no code change)
• Refactor (refactoring production code)
• Other

Checklist:

• My code follows the code style of this project.
• I have updated the documentation accordingly.
• I have formatted the code with rustfmt.
• I checked the lints with clippy.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 42.85714% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 43.47%. Comparing base (081ba68) to head (0985ab0).

Files with missing lines	Patch %	Lines
git-cliff/src/lib.rs	0.00%	2 Missing ⚠️
git-cliff/src/main.rs	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1321      +/-   ##
==========================================
+ Coverage   43.43%   43.47%   +0.04%     
==========================================
  Files          23       23              
  Lines        2245     2250       +5     
==========================================
+ Hits          975      978       +3     
- Misses       1270     1272       +2     

Flag	Coverage Δ
unit-tests	43.47% <42.86%> (+0.04%)	⬆️

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[orhun]

Looks good! Also we need to update the documentation/website about this new flag :)

[barskern]

Looks good! Also we need to update the documentation/website about this new flag :)

Thank you for your patience here! I've added your suggested changes and a small section to the website. I was also looking for a way to test it, but in the way the remote module is implemented for the moment I wasn't able to find a clean way to do it. It seems like the remote implementations are not really tested for the moment?

[orhun]

Check out the test fixtures here. I believe we can copy one of the GitHub integration ones, run it with --offline and compare the result (expected.md).