feat: add nix flake for devenv and build (#2)

.envrc

@@ -0,0 +1 @@
+use flake

.gitignore

@@ -101,4 +101,8 @@ Temporary Items
 # Ignore code-workspaces
 *.code-workspace
 
-# End of https://www.toptal.com/developers/gitignore/api/macos,linux,go,visualstudiocode
+# End of https://www.toptal.com/developers/gitignore/api/macos,linux,go,visualstudiocode
+
+# Nix
+result*
+.direnv

flake.nix

@@ -0,0 +1,38 @@
+{
+	description = "A simple Debugger for OpenID Connect IdPs.";
+
+	inputs = {
+		nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+    flake-parts = {
+      url = "github:hercules-ci/flake-parts";
+      inputs.nixpkgs-lib.follows = "nixpkgs";
+    };
+		systems.url = "github:nix-systems/default";
+	};
+
+	outputs = inputs@{ flake-parts, ... }: flake-parts.lib.mkFlake { inherit inputs; } {
+		systems = import inputs.systems;
+
+		perSystem = { pkgs, self', ... }: {
+
+			devShells.default = pkgs.mkShellNoCC {
+				buildInputs = [ pkgs.go ];
+			};
+
+      packages.default = pkgs.buildGoModule {
+        pname = "openid-connect-debugger";
+        version = "1.1.0";
+        src = inputs.self;
+        vendorHash = null;
+      };
+
+			apps.default = {
+				type = "app";
+				program = pkgs.writeShellApplication {
+					name = "openid-connect-debugger";
+					text = "${self'.packages.default}/bin/openid-connect-debugger";
+				};
+			};
+		};
+	};
+}