php doc types not highlighted

[roblourens]

From downstream: microsoft/vscode#160713

Bugs:

• No support for generics array<int, string>
• No support for meta-types class-string or class-string<ArrayAccessible>
• No support for:
  • @teplate
  • @implements
  • @extends
• Namespace \App\My\Class will have portion \App\My\ inherit comment color and Class actually properly colored (support.class.php - meta.other.type.phpdoc.php)

Example 1 - generics

Example 2 - namespaces

[realodix]

• https://phpstan.org/writing-php-code/phpdoc-types
• https://psalm.dev/docs/annotating_code/supported_annotations/

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https://github.com/laravel/framework/blob/b05b6f71e9f4099b38150f928262abbba3693ec6/src/Illuminate/Collections/Collection.php#L374