treewide: move nixos modules

modules/nixos/programs/obs/default.nix

@@ -0,0 +1,27 @@
+{ config, lib, pkgs, ... }:
+
+{
+  options.chvp.programs.obs.enable = lib.mkOption {
+    default = false;
+    example = true;
+  };
+
+  config = lib.mkIf config.chvp.programs.obs.enable {
+    boot.kernelModules = [ "v4l2loopback" ];
+    boot.extraModulePackages = [ pkgs.linuxPackages.v4l2loopback ];
+    boot.extraModprobeConfig = ''
+      options v4l2loopback video_nr=9 card_label="obs"
+    '';
+
+    chvp.base.zfs.homeLinks = [
+      { path = ".config/obs-studio"; type = "data"; }
+    ];
+
+    home-manager.users.charlotte = { pkgs, ... }: {
+      programs.obs-studio = {
+        enable = true;
+        plugins = [ pkgs.obs-studio-plugins.wlrobs ];
+      };
+    };
+  };
+}