Added sgdboop pkg and created custom overlay

packages/sgdboop.nix

@@ -0,0 +1,26 @@
+{ stdenv, fetchurl, autoPatchelfHook, openssl, curl, gtk3, gdk-pixbuf, pango
+, cairo, glib }:
+stdenv.mkDerivation rec {
+  pname = "sgdboop";
+  version = "1.2.8";
+
+  src = fetchurl {
+    url =
+      "https://github.com/SteamGridDB/SGDBoop/releases/download/v${version}/sgdboop-linux64.tar.gz";
+    sha256 = "sha256-LrP0qFg4kOhAicWtORfnW3TvIegvcJf/GiYTHcOeJK4=";
+  };
+
+  sourceRoot = ".";
+
+  nativeBuildInputs = [ autoPatchelfHook ];
+
+  buildInputs = [ openssl curl gtk3 gdk-pixbuf glib pango cairo ];
+
+  installPhase = ''
+    runHook preInstall
+    install -m755 -D SGDBoop $out/bin/SGDBoop
+    install -m444 -D libiup.so $out/lib/libiup.so
+    install -m444 -D com.steamgriddb.SGDBoop.desktop -t $out/share/applications/
+    runHook postInstall
+  '';
+}