add Show Muted filter to local and fediverse timeline

streaming api does not support with_muted yet, so all muted new status will not be visible in timeline until refresh.

it's possible to add same filter for Home/List/Remote timeline as well but seems not necessary for now as these views does not have a filter option visible.

also it might worth change the look of the muted post a bit, but I don't have good idea how it should look like, so prefer save it for another PR in future.