Show existing theme in the theme-builder by github url
Description
When the user has created tokens and perhaps changed a few color hex-codes, it could be helpful to see the changes in the same environment as used for creating the theme. Suggestion: allow to paste url to token folder in github and show the samle and contrast preview using the colors from github. Colors that does not correlate with the theme builder autogenerated could be highlighted in the overview.
Alternatively: Create an theme-view and sample web-application that can be copied and deployed in the user own repo.
Additional Information
No response
Option for upload or reference existing theme to theme builder for further tweaking.
This is nice to have, would need to be done after #2920 at least
This will only be nice for those who are on Github and the repo is open. This is possibly a small amount of consumers, It's more feasable to add the possiblity to paste a config file.