Add doc-typehints to class properties found by the PropertyDocumentation
sniff to improve the documentation and to remove the exclusion of the
sniff.
The activated sniff avoids that new code is missing doc-typehints or
real-typehints.
Change-Id: Id7fcfd086cdbb3f040091e1d1a81472e7a524091
* make intent annotations possible in TeX math items
* introduce a new command to annotate as well as node and translation
* Adds a parser expression grammar to validate intent attributes for
* it basically adds the previous, now abandoned changeset: https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Math/+/949964
Bug: T327098
Change-Id: I21adfac4c3580e238f059721fdf0c1566cb4e857
