Refactor add to playlist modal (#1236)

* Refactor add to playlist modal

* redesign base modal component, add ModalButton component

* improve visibility of filled button focus

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Co-authored-by: jeffvli <jeffvictorli@gmail.com>

src/i18n/locales/en.json

@@ -92,6 +92,8 @@
         "playerMustBePaused": "player must be paused",
         "preview": "preview",
         "previousSong": "previous $t(entity.track_one)",
+        "private": "private",
+        "public": "public",
         "quit": "quit",
         "random": "random",
         "rating": "rating",
@@ -250,8 +252,10 @@
             "title": "add server"
         },
         "addToPlaylist": {
+            "create": "create $t(entity.playlist_one) {{playlist}}",
             "input_playlists": "$t(entity.playlist_other)",
             "input_skipDuplicates": "skip duplicates",
+            "searchOrCreate": "Search $t(entity.playlist_other) or type to create a new one",
             "success": "added $t(entity.trackWithCount, {\"count\": {{message}} }) to $t(entity.playlistWithCount, {\"count\": {{numOfPlaylists}} })",
             "title": "add to $t(entity.playlist_one)"
         },