Custom change-logger

[Shivansh-007]

Closes #87

To Do (Now):

• [x] Move constants to config.toml
• [x] Add GitHub workflow for checking news
• [x] Document the code
• [x] Clean and remove redundant code

To Do (Will be done once the current API/design is finalised and reviewed):

• [x] Add documentation
• [ ] Port existing change-log

[onerandomusername]

Will have more to review in a moment but since there was a push while reviewing, github does not let the review complete.

[coveralls]

Coverage remained the same at 78.756% when pulling 1d149dbeb588d94d0fa8e314f87f036d853a6241 on feat/custom-changelogger into 7347f592323f32672dc5e794d442ff643788fbef on main.

[codecov[bot]]

Codecov Report

Merging #89 (b164477) into main (4b07917) will decrease coverage by 0.28%. The diff coverage is n/a.

:exclamation: Current head b164477 differs from pull request most recent head 1d149db. Consider uploading reports for the commit 1d149db to get more accurate results

@@            Coverage Diff             @@
##             main      #89      +/-   ##
==========================================
- Coverage   70.90%   70.62%   -0.29%     
==========================================
  Files          33       32       -1     
  Lines        1619     1593      -26     
  Branches      199      190       -9     
==========================================
- Hits         1148     1125      -23     
+ Misses        439      437       -2     
+ Partials       32       31       -1     

Impacted Files	Coverage Δ
tests/modmail/test_logs.py	100.00% <0.00%> (ø)
tests/modmail/utils/test_embeds.py	100.00% <0.00%> (ø)
tests/modmail/conftest.py

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 7347f59...1d149db. Read the comment docs.