Move overlays into their own dirs

overlays/g810-led/default.nix

@@ -0,0 +1,47 @@
+{ stdenv, lib, fetchFromGitHub, hidapi, profile ? "/etc/g810-led/profile" }:
+
+stdenv.mkDerivation rec {
+  pname = "g810-led";
+  version = "0.4.2";
+
+  src = fetchFromGitHub {
+    owner = "MatMoul";
+    repo = pname;
+    rev = "v${version}";
+    hash = "sha256-FFaOGRLk9wCQ+Xkf/KacXF3rOrvg8xSyeDEwe+K5s/o=";
+  };
+
+  buildInputs = [ hidapi ];
+
+  installPhase = ''
+    runHook preInstall
+
+    install -D bin/g810-led $out/bin/g810-led
+    ln -s \./g810-led $out/bin/g213-led
+    ln -s \./g810-led $out/bin/g410-led
+    ln -s \./g810-led $out/bin/g413-led
+    ln -s \./g810-led $out/bin/g512-led
+    ln -s \./g810-led $out/bin/g513-led
+    ln -s \./g810-led $out/bin/g610-led
+    ln -s \./g810-led $out/bin/g815-led
+    ln -s \./g810-led $out/bin/g910-led
+    ln -s \./g810-led $out/bin/gpro-led
+
+    substituteInPlace udev/g810-led.rules \
+      --replace "/usr" $out \
+      --replace "/etc/g810-led/profile" "${profile}"
+    install -D udev/g810-led.rules $out/etc/udev/rules.d/90-g810-led.rules
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description =
+      "Linux LED controller for Logitech G213, G410, G413, G512, G513, G610, G810, G815, G910 and GPRO Keyboards";
+    inherit (src.meta) homepage;
+    license = licenses.gpl3;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ samuelgrf ];
+  };
+}
+