Move `public/*` to `public/assets/*`

Some old PRs (like #15219) introduced inconsistent directory system.

For example: why the local directory "public" is accessed by
`http://site/assets`? How to serve the ".well-known" files properly in
the public directory?

For convention rules, the "public" directory is widely used for the
website's root directory. It shouldn't be an exception for Gitea.

So, this PR makes the things consistent:

* `http://site/assets/foo` means `{CustomPath}/public/assets/foo`.
* `{CustomPath}/public/.well-known` and `{CustomPath}/public/robots.txt`
can be used in the future.

This PR is also a prerequisite for a clear solution for:
* #21942
* #25892 
* discourse.gitea.io: [.well-known path serving custom files behind
proxy?](https://discourse.gitea.io/t/well-known-path-serving-custom-files-behind-proxy/5445/1)

This PR is breaking for users who have custom "public" files (CSS/JS).
After getting approvals, I will update the documents.

----

## ⚠️ BREAKING ⚠️

If you have files in your "custom/public/" folder, please move them to
"custom/public/assets/".

---------

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Giteabot <teabot@gitea.io>

As title.

Co-authored-by: KN4CK3R <admin@oldschoolhack.me>

This commit instructs Gitpod to run `docs` in watch mode in fresh
development environments so any dev could start hacking in seconds.

Also included some vscode extensions for Vue, Go, and Docker.


Try it here:

[![Open in
Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/#https://github.com/yardenshoham/gitea/tree/gitpod)

Signed-off-by: Yarden Shoham <hrsi88@gmail.com>
Co-authored-by: Gusted <williamzijl7@hotmail.com>

* Update `TODOs` badge to reflect `main` as default branch

* update `README_ZH.md` as well

* microbadger is no more, rm from readme

* Update README_ZH.md

* Update README.md

* chinese translation

Signed-off-by: a101211279 <1012112796@qq.com>

* Update README.md

* Update README.md

* Update README.md

Co-authored-by: a101211279 <1012112796@qq.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

* Add bountysource to Sponsors link

* Add badge to readme

* Consolidate Logos and update README header

- Remove unused `logo-lg.png`, `logo-sm.png` and `logo-192.png`.
- Consolidate `favicon.svg` and `logo.svg` to just `logo.svg`.
- Remove Safari Mask icon, it seems to work fine with just `favicon.png` (no SVG support).
- Remove Fluid Icon. It only served Firefox and SVG works just fine there.
- Update customization instructions.
- Update README.md to use SVG icon, increase logo size and center it and badges.

* Update README_ZH.md

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

* Update README_ZH.md

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

* use relative instead of absolute paths

* update badges of ZH readme

* update screenshots

* use <style> for table

* remove useles stype

* absolute paths for images

- Move Screenshots to Bottom

Signed-off-by: Tosone <i@tosiney.com>

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

* fix broken godoc link and add arch in English README

* typo

* Add Korean support

* replace Gogs to Gitea

* Update example install url from try.gogs.io to try.gitea.io

* Ask if issue can be reproduced on try.gitea.io

* Link try.gitea.io to the README

Also use relative link to banner

Signed-off-by: Andrey Nering <andrey.nering@gmail.com>

* Fix broken link for Contributors Guide

* remove ./

* Dropped codebeat, we got go reportcard

* Dropped gopm file, we are using govendor

* Dropped chinese readme, this should be part of the docs

* Dropped bra config, not really used

* Dropped packager, we will provide our own packages

* Added badges to the README

* Restructured the travis config

Add new locale Serbian (Cyrillic)

Closes #3591