Instead of calling the endpoint every time filters are needed, it will
be called only once and the result cached. This will result in quite
some requests less on instances supporting v2.
I also tested v1 filters and made some small improvements. We should
[remove filters v1
support](https://github.com/tuskyapp/Tusky/issues/4538) some time in the
future though.
This refactors the NotificationsFragment and related classes to Kotlin &
paging.
While trying to preserve as much of the original behavior as possible,
this adds the following improvements as well:
- The "show notifications filter" preference was added again
- The "load more" button now has a background ripple effect when clicked
- The "legal" report category of Mastodon 4.2 is now supported in report
notifications
- Unknown notifications now display "unknown notification type" instead
of an empty line
Other code quality improvements:
- All views from xml layouts are now referenced via ViewBindings
- the classes responsible for showing system notifications were moved to
a new package `systemnotifications` while the classes from this
refactoring are in `notifications`
- the id of the local Tusky account is now called `tuskyAccountId` in
all places I could find
closes https://github.com/tuskyapp/Tusky/issues/3429
---------
Co-authored-by: Zongle Wang <wangzongler@gmail.com>
