Move front end source files to web_src and generate index.js minify version

[lunny]

Fix #8430 and this will also reduce gitea package size since we moved frontend source files from public directory.

[guillep2k]

Was npm already a requirement for building from source?
EDIT: Sorry, I didn't see that it was only for building js during development.

[guillep2k]

Shouldn't we lock to a specific version of the minifier? Otherwise CI build might differ from the committed version.

[silverwind]

This is unnecessary, just run npm install --save-dev webpack which will add it as a proper dependency. To run it, use npx webpack <args> afterwards.

[silverwind]

This doesn't really solve #8430. All that webpack config does is copy source to destination. If you want to minify, you would at least want to add a minify plugin, for which I recommend terser:

https://github.com/webpack-contrib/terser-webpack-plugin

[gary-kim]

We should add a package.json and handle dependencies there. We also need to set Webpack to production mode for the final compile, either in the Webpack config or in the command for it.

[lunny]

@gary-kim we already have a package.json file on home dir.

[gary-kim]

🤦 Forgot about LESS.
What @silverwind said then.