build: 🏗️ Add Nix build

nix/package.nix

@@ -0,0 +1,65 @@
+{
+  lib,
+  stdenv,
+  pnpm,
+  bun,
+  nodejs,
+  makeWrapper,
+  ...
+}: let
+  packageJson = builtins.fromJSON (builtins.readFile ../package.json);
+in
+  stdenv.mkDerivation (finalAttrs: {
+    pname = packageJson.name;
+    version = packageJson.version;
+
+    src = ../.;
+
+    pnpmDeps = pnpm.fetchDeps {
+      inherit (finalAttrs) pname version src;
+      hash = "sha256-NFppXHekesdV9Qg81I7fNjLPTvb3vBz7557a1AGlyOI=";
+    };
+
+    nativeBuildInputs = [
+      pnpm
+      pnpm.configHook
+      bun
+      nodejs
+      makeWrapper
+    ];
+
+    buildPhase = ''
+      runHook preBuild
+
+      # Disable telemetry, as it crashes the build
+      export NUXT_TELEMETRY_DISABLED=1
+      bun run emojis:generate
+      bun run build
+
+      runHook postBuild
+    '';
+
+    installPhase = ''
+      runHook preInstall
+
+      mkdir -p $out
+      cp -r .output/public $out/${finalAttrs.pname}
+
+      runHook postInstall
+    '';
+
+    meta = with lib; {
+      description = packageJson.description;
+      license = licenses.agpl3Only;
+      maintainers = [
+        {
+          name = "CPlusPatch";
+          email = "contact@cpluspatch.com";
+          github = "CPlusPatch";
+          githubId = 42910258;
+          matrix = "@jesse:cpluspatch.dev";
+        }
+      ];
+      platforms = ["x86_64-linux" "aarch64-linux"];
+    };
+  })