feat(mpv): add uosc and thumbfast scripts for a minimalist UI

apps/mpv/default.nix

@@ -1,5 +1,17 @@
 {pkgs, ...}: {
-  home.packages = with pkgs; [mpv];
+  programs.mpv = {
+    enable = true;
+    scripts = with pkgs.mpvScripts; [
+      uosc
+      thumbfast
+    ];
+    config = {
+      # uosc provides its own UI
+      osc = "no";
+      osd-bar = "no";
+      border = "no";
+    };
+  };
 
   xdg.mimeApps = {
     enable = true;
@@ -19,4 +31,4 @@
     "center, class:^(mpv)$"
     "size 70% 70%, class:^(mpv)$"
   ];
-}
+}