Repository refactor, folder structure & more

[vagelisp]

Hello all,
I made a small refactor on the repository to have a better DevX and make life easier ( hopefully ) after the small chat I had with @Ioanna-Mitsani

• Added @wordpress/scripts to compile and Lint our SASS files while respecting CSS Coding Standards
• Switched to SCSS syntax
• Restructured the SASS files/folders
• Added more info on the readme file
• A few more edits/tweaks here and there - it's late can't track everything 😬 -

Some may find this too much, and I am not expecting this to be merged immediately.
Hopefully, the team will review it and then we can chat about it.
Again please don't merge before we have a chat with the team.

The PR can be found here #6
Thanks

[vagelisp]

I will merge the #6 PR to go with this, as we all agreed yesterday that it's OK.
I added the old output.css file as a failsafe; we can remove that in the following days.

[vagelisp]

The old file's path has been changed, so I adjusted the path on the website. Everything seems to be working fine.
I'll do some more testing and import the new file.

I am just documenting the steps/actions here in case anyone wants to follow/comment/change something.

Thanks.

[vagelisp]

I removed some of the CSS we had on "Additional CSS."
Some of the rules are causing conflicts (i.e. with the menu as there's a global ul style rule ), and some were duplicates since Ioana added typography on git. I also extended the heading rules a bit to make them global ( ofc we can override when needed ).

Also, I switched from the output.css to the new CSS file so I am moving this into the backup folder.