PlaylistPage: fix search input (#39226)

* PlaylistPage: removes search due to no wildcard support

* PlaylistPage: adds back search input and wildcard search support

* makes banner to appear only when playlist does not exist

* Chore: small refactor

* Chore: some code refactoring to make it readable

* fixes focus leaving input when query is cleared

* adds styling to the emptyQueryList banner

* extracts emptyQueryListBanner component to a separate file

* adds debounce to search

* use new theme for styling

* Chore: some nit fix

* fixes empty list banner showing for a second before the full list is loaded

* Fix: removes search when playlist is empty

Co-authored-by: Ash <ashharrison90@gmail.com>

Co-authored-by: Hugo Häggmark <hugo.haggmark@gmail.com>

pkg/services/sqlstore/playlist.go

@@ -133,7 +133,7 @@ func SearchPlaylists(query *models.GetPlaylistsQuery) error {
 	sess := x.Limit(query.Limit)
 
 	if query.Name != "" {
-		sess.Where("name LIKE ?", query.Name)
+		sess.Where("name LIKE ?", "%"+query.Name+"%")
 	}
 
 	sess.Where("org_id = ?", query.OrgId)