add(apps): video-to-transcription app

apps/transcription/default.nix

@@ -0,0 +1,6 @@
+{pkgs, ...}: {
+  home.packages = with pkgs; [
+    openai-whisper
+    ffmpeg
+  ];
+}

modules/home/apps-optional.nix

@@ -10,5 +10,6 @@
     ../../apps/jellyfin-mpv-shim
     ../../apps/nextcloud
     ../../apps/ttyper
+    ../../apps/transcription
   ];
 }