Add configurable feature to load styles from the TailwindCSS Play CDN

[caendesilva]

This allows for faster prototyping without having to set up an asset pipeline.

For a more consistent result we load the actual Tailwind config from file and inject it into the CDN config. The CDN works as a superset so the default assets are still loaded, thus including the base HydePHP styles. Since this is only for local development the extra bandwidth is not a concern as PlayCDN should not be used in production.

Unfortunately it can't also be defined at runtime by passing a flag to the serve command as proposed in the issue #665 as the server is run in in a separate process, though it would be cool to be able to pass flags to the server script.

[codecov]

Codecov Report

Merging #683 (83fef83) into master (e0b8f28) will not change coverage.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##              master      #683   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
- Complexity      1050      1052    +2     
===========================================
  Files            132       132           
  Lines           2599      2606    +7     
===========================================
+ Hits            2599      2606    +7     

Impacted Files	Coverage Δ
packages/framework/src/Facades/Asset.php	100.00% <ø> (ø)
.../framework/src/Framework/Services/AssetService.php	100.00% <100.00%> (ø)

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