feat(routers): support gitweb such as git.samba.org

[linrongbin16]

Regression Test

Platforms

• windows
• macOS
• linux

Tasks

• Use GitLink to copy git link.
• Use GitLink! to open git link in browser.
• Use GitLink blame to copy the /blame git link.
• Use GitLink! blame to open the /blame git link in browser.
• Copy git link in a symlink directory of git repo.
• Copy git link in an un-pushed git branch, and receive an expected error.
• Copy git link in a pushed git branch but edited file, and receive a warning says the git link could be wrong.

[codecov]

Codecov Report

Attention: 48 lines in your changes are missing coverage. Please review.

Comparison is base (dd7fdd1) 75.76% compared to head (55ba1f6) 77.26%.

Files	Patch %	Lines
lua/gitlinker.lua	68.45%	47 Missing ⚠️
lua/gitlinker/linker.lua	94.11%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #149      +/-   ##
==========================================
+ Coverage   75.76%   77.26%   +1.49%     
==========================================
  Files          11       11              
  Lines         949      994      +45     
==========================================
+ Hits          719      768      +49     
+ Misses        230      226       -4     

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[linrongbin16]

relate: #146