feat(pkgs): add circom and circom-lsp

pkgs/circom-lsp/default.nix

@@ -0,0 +1,33 @@
+{ lib, fetchFromGitHub, rustPlatform, openssl, pkg-config, libxkbcommon }:
+
+rustPlatform.buildRustPackage rec {
+  pname = "circom-lsp";
+  version = "0.1.3";
+
+  src = "${fetchFromGitHub {
+    owner = "rubydusa";
+    repo = pname;
+    rev = "refs/tags/v${version}";
+    sha256 = "sha256-Y71qmeDUh6MwSlFrSnG+Nr/un5szTUo27+J/HphGr7M=";
+  }}/server";
+
+  cargoSha256 = "sha256-Lq8SpzkUqYgayQTApNngOlhceAQAPG9Rwg1pmGvyxnM=";
+
+  nativeBuildInputs = [
+    pkg-config
+  ];
+
+  buildInputs = [ ];
+
+  PKG_CONFIG_PATH = "${openssl.dev}/lib/pkgconfig";
+  LD_LIBRARY_PATH = lib.makeLibraryPath buildInputs;
+
+  doCheck = false;
+
+  meta = with lib; {
+    description = "A Language Server Protocol Implementation for Circom";
+    homepage = "https://github.com/rubydusa/circom-lsp";
+    license = licenses.isc;
+    maintainers = with maintainers; [ reo101 ];
+  };
+}