Ignore comments starting with # from rc file

[bew]

Tridactyl version: 1.20.3
Firefox version: Mozilla Firefox 83.0
Operating system: linux

Currently rc file loading only ignore empty lines and lines starting with vim'like comments ", however # seems to work as well as a comment in rcfile.

Since each excmd is executed with a delay (to workaround #1409 for now), each of the # comments I use adds loading time for nothing.

Src to change:

tridactyl/src/background/config_rc.ts

Line 65 in 78f6050

return excmds.filter(x => /\S/.test(x) && !x.trim().startsWith('"'))