feat(service): Add matrix service

[arnocornette]

Description

Adds a notifier service for Matrix

Motivation and Context

This addresses #283 partially. I decided to split up the Matrix and Signal PRs as tey are two features in one ticket.

Matrix is an open standard and communication protocl for real-time communication.

How Has This Been Tested?

I tested this in 2 steps:

• Basic unit tests using mocks
• Manual testing has been performed as well

Screenshots / Output (if appropriate):

This is output from several runs.

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 added tests to cover my changes.
• All new and existing tests passed.

[arnocornette]

Normally I reformatted with gofumpt. My bad, didn't see that you used a different formatter

P.S. Maybe you can put it in the how to contribute page?

[codecov-commenter]

Codecov Report

Base: 63.55% // Head: 64.06% // Increases project coverage by +0.51% 🎉

Coverage data is based on head (3d3d28a) compared to base (3e00299).
Patch coverage: 72.58% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #410      +/-   ##
==========================================
+ Coverage   63.55%   64.06%   +0.51%     
==========================================
  Files          30       32       +2     
  Lines        1029     1091      +62     
==========================================
+ Hits          654      699      +45     
- Misses        316      326      +10     
- Partials       59       66       +7     

Impacted Files	Coverage Δ
service/matrix/mock_matrix_client.go	70.00% <70.00%> (ø)
service/matrix/matrix.go	75.00% <75.00%> (ø)

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[svaloumas]

Normally I reformatted with gofumpt. My bad, didn't see that you used a different formatter

P.S. Maybe you can put it in the how to contribute page?

@nikoksr Leaving this comment here cause I think that's a good idea to consider.

[nikoksr]

Normally I reformatted with gofumpt. My bad, didn't see that you used a different formatter

P.S. Maybe you can put it in the how to contribute page?

@nikoksr Leaving this comment here cause I think that's a good idea to consider.

100% agree. We can go over the step-by-step guide and make it a little bit more granular probably. Thanks for the feedback @arnocornette.

[arnocornette]

I think the linter will not complain now but it's hard as the lint action does not give the filenames it doesn't work on

[nikoksr]

@arnocornette not sure if you're aware of it, but you can run make lint and make fmt locally. That should help you resolve it.

We'll definitely clarify the step-by-step section in the contrib guide.

[nikoksr]

Greatly appreciate your contribution, @arnocornette! And thanks again for the feedback.

[blackandred]

Awesome work, thank you! ❤️