Remove the src directory from packages.json's files

[anikethsaha]

Remove this line https://github.com/docsifyjs/docsify/blob/develop/package.json#L20 , till now we are publishing this directory as well and we should not have that.

[trusktr]

There's no good reason to make these sorts of breaking changes. It is useful for some people to rely on source files for build systems, and if someone already is, then this breaks their setup.

We should instead try writing tests. We don't need to wait for playwright PR to be finished in order to begin doing that.

[sy-records]

I think the build system should use github instead of npm

[anikethsaha]

I think it was kept as a mistake may cause even if we use this from cdn, it will break as styles are written in .styl and ja as modules.
And it is not mentioned in anywhere to use any files from src/*. So I think even if it is breaking, it might not be an issue with us.
Thoughts?