hjson-go: init at version 3.1.0

There already exists a package "hjson" but it's written in Python.

pkgs/development/tools/hjson-go/default.nix

@@ -0,0 +1,22 @@
+{ lib, buildGoPackage, fetchFromGitHub }:
+
+buildGoPackage rec {
+  pname = "hjson-go";
+  version = "3.1.0";
+
+  src = fetchFromGitHub {
+    owner = "hjson";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-X02NnSefJfKUfagzJpdW1UpOLe84SvRaTN+8GqGKzbU=";
+  };
+
+  goPackagePath = "github.com/hjson/hjson-go";
+
+  meta = with lib;
+    src.meta // {
+      description = "Utility to convert JSON to and from HJSON";
+      maintainers = with maintainers; [ ehmry ];
+      license = licenses.mit;
+    };
+}

pkgs/top-level/all-packages.nix

@@ -32559,6 +32559,8 @@ with pkgs;
 
   hjson = with python3Packages; toPythonApplication hjson;
 
+  hjson-go = callPackage ../development/tools/hjson-go { };
+
   epkowa = callPackage ../misc/drivers/epkowa { };
 
   utsushi = callPackage ../misc/drivers/utsushi { };