feat(notifications): add overlay notifications with position config (#110)

src/config/definitions.ts

@@ -34,6 +34,7 @@ const {
   subsync,
   startupWarmups,
   updates,
+  notifications,
   auto_start_overlay,
 } = CORE_DEFAULT_CONFIG;
 const { ankiConnect, jimaku, anilist, mpv, yomitan, jellyfin, discordPresence, ai, youtubeSubgen } =
@@ -57,6 +58,7 @@ export const DEFAULT_CONFIG: ResolvedConfig = {
   subsync,
   startupWarmups,
   updates,
+  notifications,
   subtitleStyle,
   subtitleSidebar,
   auto_start_overlay,