move options to separate modules, set up mkDocs generation

modules/options/gaming.nix

@@ -0,0 +1,17 @@
+{ inputs, self, ... }: {
+  flake.nixosModules.gamingOptions = { lib, ... }: {
+    options.features.hardware.steam-controller.enable = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      description = "Enable tweaks and configurations that assist when using Valve's Steam Controller";
+    };
+  };
+
+  flake.homeModules.gamingOptions = { lib, ... }: {
+    options.features.hardware.steam-controller.enable = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      description = "Enable tweaks and configurations that assist when using Valve's Steam Controller";
+    };
+  };
+}