Import source to librtti

Summary:

- Import initial source

Test Plan:
NA

nixSupport/librtti.nix

@@ -0,0 +1,35 @@
+{
+  lib,
+  stdenv,
+  pkgs,
+  withDebug ? false,
+  ...
+}:
+
+stdenv.mkDerivation {
+
+  pname = "rtti";
+  version = "0.0.1";
+
+  src = ./..;
+
+  nativeBuildInputs = with pkgs; [
+    meson
+    ninja
+    pkg-config
+    which
+    unity_test_with_color
+  ];
+
+  build-system = [ pkgs.meson ];
+
+  dontStrip = withDebug;
+  separateDebugInfo = withDebug;
+
+  impureEnvVars = [ "HOME" ];
+
+  mesonFlags = [
+    (lib.optional withDebug "--buildtype=debug -Db_sanitize=address -Dwith_debug=true ")
+    #    (lib.optional (!with_debug) "-Dbuildtype=release")
+  ];
+}