Support the new `tech()` and `format()` syntax in `@font-face`

[yisibl]

The specification has updated the syntax, which has been implemented in Firefox 105.

e.g.

// format() function must precede tech() if both are present
{ src: 'url("foo.ttf") format(opentype) tech(feature-opentype)', valid: true },
{ src: 'url("foo.ttf") tech(feature-opentype) format(opentype)', valid: false },

Spec: https://drafts.csswg.org/css-fonts/#font-face-src-parsing

<url> [ format(<font-format>)]? [ tech( <font-tech>#)]? | local(<font-face-name>)
<font-format>= [<string> | collection | embedded-opentype | opentype
 | svg | truetype | woff | woff2 ]
<font-tech>= [<font-feature-tech> | <color-font-tech>
 | variations | palettes | incremental ]
<font-feature-tech>= [feature-opentype | feature-aat | feature-graphite]
<color-font-tech>= [color-COLRv0 | color-COLRv1 | color-SVG | color-sbix | color-CBDT ]

See also:

• web-platform-tests/wpt@9f8a6cc
• mozilla/gecko-dev@bc708c8