Add Monologue as a default app (#13449)

Monologue is Omarchy's own webcam recorder: pick a camera and microphone
once, press Space to record, and stop straight into a built-in editor
to split, trim and remove clips before saving an MP4.

Ship it in the base packages alongside Omacut, include it in the
preinstall restore/remove lists, and describe it in the manual. A
migration installs it on existing machines unless the user removed the
preinstalls.

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

bin/omarchy-install-preinstalls

@@ -23,6 +23,7 @@ if gum confirm "Are you sure you want to restore all preinstalled web apps, TUI
     moonlight-qt \
     lazydocker \
     omacut \
+    monologue \
     omacalc \
     omawrite; then
     echo -e "\nPreinstalls are still marked as removed. Fix the errors above and try again."

bin/omarchy-remove-preinstalls

@@ -42,6 +42,7 @@ if gum confirm "Are you sure you want to remove all preinstalled web apps, TUI w
     moonlight-qt \
     lazydocker \
     omacut \
+    monologue \
     omacalc \
     omawrite
 fi