Update content to target only explicit files at root with coverage for all default WP templates (thanks Jon!).

Added basic safelisting for bg and text primary, secondary, and tertiary colors.

Removed additional plugins I had added previously.

- Added WP breakpoint (600px) often used in core styles
- Container are now centered and have padding by default
- Removed additional colors that were already being defined by theme.json

Note: on the above for the colors, I’m just having the definitions come directly from theme.json, vs using the CSS variables (which are already CSS variables, or absolute values). I think its the same difference here since these are both coming from the same place anyway.

Added official plugins back to create a simpler DX and reduce friction during initial setup. Added a brief explanation for each and link to the plugin page in the Tailwind docs.

Setup separate file for tailwind helper JS
Added logic for opt-in importing for color palettes in blocks (includes dedup to prevent overwrites)

I tested this locally using a custom block style.

Colors are now retrieved directly from theme.json
Colors with the primary, secondary, and tertiary slugs are now safelisted via regex
CSS organization has been reorganized around the use of imports, vs one tailwind index file
Content definitions updated with list from Jon
Tested/confirmed pattern for ensuring WP class defs are not lost
Plugins are included by default

Add extensions.json in .vscode config

Full coverage for Admin bar and certain gutenberg styles

Tailwind: Additional config updates

Fix arbitrary class typos for reduced motion

Add Doc Links

Update placement of purgecssWordPress safelist.

Co-authored-by: Jon Christensen <[email protected]>

Tailwind Documentation

Add PurgeCSS WordPress SafeList

- Added additional classes on the button example to reinforce the reasoning behind default recommendation.
- Added further clarficiation on a number of subjects including additional setup considerations.
- Altered a few sentences lightly for better clarity/readability.
- Typo Fixes.

# Conflicts:
#	themes/10up-theme/assets/css/frontend/base/index.css
#	themes/10up-theme/package.json

Grammar adjustment

Feature/19138441 tailwind v3 testing

Tailwind v3 doc updates