Support `@phan-` prefixes for recognized doc tags

[anomiex]

The following prefixes are added:

• @phan-assert
• @phan-assert-if-false
• @phan-assert-if-true
• @phan-extends
• @phan-inherits
• @phan-method
• @phan-mixin
• @phan-param
• @phan-property
• @phan-property-read
• @phan-property-write
• @phan-real-return
• @phan-return
• @phan-template
• @phan-type
• @phan-var

No changes to any of the parsing were made, as the syntaxes seem to match what's already done for the existing unprefixed tags and/or the existing @psalm- and @phpstan- prefixed tags.

[ondrejmirtes]

Thank you!

[ondrejmirtes]

Please send a PR to phpstan-src too.