* WIP variations script
* add some initial code to copy theme variants
* Add more variations
* Fix blue and slate variations
* Remove commas breaking theme.json
* Refactored script to exclude unnecessary elements, copy additional resources and merge theme.json data
* Added npm script target to variations build. Added readme files to variation destination.
* Removed unused 'foreground' palette color from geologist variations. Mapped 'secondary' palette color to 'secondary' custom color in base Geologist theme.
* Removed unused 'foreground' palette color from geologist variations. Mapped 'secondary' palette color to 'secondary' custom color in base Geologist theme.
* Made the variations script smart
* Made site title adjustments per design request
* Update the header to use the standard blockbase header
* Refactored the usage of default header out of a change to template part and instead introduced the concept of 'mods' that will change templates to suit
* Removed header modifications to Geologist variations
* Added Google font URL information to geologist-blue
* Add IBM Plex Mono to our list of cusotmization fonts
Co-authored-by: Ben Dwyer <ben@scruffian.com>
