Several performance improvements

[cezaraugusto]

This is a big bundle of changes to make Extension.js lighter and more performant.

Also:

Simplified interface:

Single utility dev tools for Extension.js browser support

[OSpoon]

hi @cezaraugusto,
Please check if new-preact, content-preact, new-less, and new-sass are working correctly.

[cezaraugusto]

@OSpoon new-less and and new-sass are reloading well, but it seems there is something with the resolver plugin that is preventing the scripting API from injecting styles into the page using these templates.

for new-preact, content-preact, they build properly but still can't reload the page

[cezaraugusto]

I'm investigating why the resolver isn't working properly

[cezaraugusto]

@OSpoon anything else you want to include in this PR before we merge? I'm OK having a Preact fix in a future release.

[OSpoon]

I spent some time looking into why new-preact is not reloading the page, but unfortunately, I haven't found the cause yet. The preact-webpack repo I created seems to be working fine.

I haven't been involved much in browser extensions and build-related work, so I don't have any good ideas at the moment. If I come up with anything new, I'll let you know right away. 😁

[cezaraugusto]

@OSpoon awesome, let's get this one into main