Minify/clean custom code during build

[#1]

Remove comments from custom code during the build process or even minify the custom code.

[#2]

I would expect that minifcation happens in the background but the interface still shows comments etc. GTM handles it like this. Or even that minification happens with the staging build.

[#3]

Minification should happen during all builds, but it's not. Launch just escapes the full HTML incl. comments. Therefor this CR

[#4]

Indeed minifcation of custom code should happen at all.

[#5]

It's frustrating that comments still do not seem to be removed from the library.  Hopefully Adobe will address as some point.

[#6]

+1