[fpc-pascal] New FCL-CSS package in the GitLab repo

[support at uvviewsoft.com]

@Michael Van Canneyt
I didn't test but I hope this package can parse this _minified_ CSS 
file? Attached on the forum

https://forum.lazarus.freepascal.org/index.php/topic,58853.msg438550.html#msg438550

It has many tricks. E.g. @media blocks (@media supports nested blocks, 
not only 1 level), e.g. {} block for N classes, e.g. weird class names.

Alexey