Feat/auth wip

[hunjixin]

• simple merge request model
• auth middleware
• api for fetch wip changes

[codecov]

Codecov Report

Merging #41 (22e2377) into main (04288e0) will decrease coverage by 1.44%.
Report is 1 commits behind head on main.
The diff coverage is 27.79%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #41      +/-   ##
==========================================
- Coverage   58.35%   56.92%   -1.44%     
==========================================
  Files          62       69       +7     
  Lines        6796     7080     +284     
==========================================
+ Hits         3966     4030      +64     
- Misses       2393     2603     +210     
- Partials      437      447      +10     

Files	Coverage Δ
api/custom_response.go	90.00% <100.00%> (+0.52%)	⬆️
auth/basic_auth.go	60.21% <100.00%> (ø)
models/object.go	63.03% <ø> (ø)
models/ref.go	92.68% <ø> (ø)
models/repository.go	74.64% <100.00%> (ø)
models/wip.go	97.24% <100.00%> (ø)
versionmgr/changes.go	70.44% <ø> (ø)
versionmgr/commit.go	64.94% <100.00%> (-0.17%)	⬇️
auth/session_store.go	0.00% <0.00%> (ø)
models/merge_request.go	85.71% <85.71%> (ø)
... and 8 more