Enhancements for lists of suspended users and suspended mods

[gennitdev]

To make it easier to check if a user or mod has been suspended, it would be nice to make lists of suspended users searchable.

The relevant files are:

• pages/forums/[forumId]/edit/suspended-users.vue
• pages/forums/[forumId]edit/suspended-mods.vue

Desired enhancements:

• Can search suspended user list by username
• Can search suspended mod list by mod's displayName
• Both lists are paginated

For examples of how to implement search bars whose results update immediately, see components/discussion/list/DiscussionFilterBar.vue. Notice that the way it updates state is by modifying URL params. This is my preferred approach to search because it allows the user to link to search results. The list of results should watch the URL params to change the variables passed to the async query to get filtered results; see components/discussion/list/SitewideDiscussionList.vue for an example.