added ignores and a default build file

.gitignore

@@ -74,4 +74,5 @@ vgcore.*
 
 # cache file for ale
 .cache
-async.plist
+*.plist
+result

default.nix

@@ -0,0 +1,15 @@
+with import <nixpkgs> {};
+
+stdenvNoCC.mkDerivation {
+  name = "forstio";
+  src = ./.;
+
+  nativeBuildInputs = [
+    scons
+    clang_14
+  ];
+
+  buildInputs = [
+    gnutls
+  ];
+}