Render READMEs in docs/ .gitea or .github from root

[zeripath]

Fixes: #5370

[codecov-io]

Codecov Report

Merging #10361 into master will increase coverage by 0.04%.
The diff coverage is 41.33%.

@@            Coverage Diff             @@
##           master   #10361      +/-   ##
==========================================
+ Coverage   43.67%   43.71%   +0.04%     
==========================================
  Files         585      586       +1     
  Lines       81080    81223     +143     
==========================================
+ Hits        35414    35510      +96     
- Misses      41279    41321      +42     
- Partials     4387     4392       +5

Impacted Files	Coverage Δ
models/repo.go	51.32% <0%> (-0.04%)	⬇️
routers/repo/view.go	37.17% <41.89%> (+0.81%)	⬆️
services/pull/temp_repo.go	29.05% <0%> (-2.57%)	⬇️
services/pull/patch.go	60.37% <0%> (-2.52%)	⬇️
routers/home.go	46.8% <0%> (-0.81%)	⬇️
models/issue.go	53.82% <0%> (-0.13%)	⬇️
modules/indexer/code/bleve.go	64.7% <0%> (-0.06%)	⬇️
modules/indexer/code/indexer.go	42.62% <0%> (ø)	⬆️
modules/analyze/code_langauge.go	81.25% <0%> (ø)
modules/setting/indexer.go	91.89% <0%> (+0.22%)	⬆️
... and 12 more

---

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[lunny]

@zeripath Could you add a test for this?

[zeripath]

@lunny I'd love to if you could tell me an example test to look at...

[lafriks]

Check out this for better file/dir reading using src-d: https://github.com/src-d/go-license-detector/blob/63bc9348890a362ea9cc95e78b68c67db2aba656/licensedb/filer/filer.go#L111

[zeripath]

So @lafriks I don't think we can do that if we want to continue to allow Readme/README/ReAdMe/etc. we can't just query each individual type so we have to walk the directory structure.

[m-a-v]

Symbolic links are also supported?

README.md -> my/own/subdirectory/README.md

[zeripath]

yes

[m-a-v]

Awesome. Thanks!