Add SwiftMetaModelGenerator

Formular/swiftmetamodelgenerator.rb

+class SwiftMetaModelGenerator < Formula
+  desc "A swift meta model generator"
+  homepage "https://thecodelabs.de/tobias/SwiftMetaModelGenerator"
+  url "https://thecodelabs.de/tobias/SwiftMetaModelGenerator/-/archive/1.0.0/SwiftMetaModelGenerator-1.0.0.tar.gz"
+  version "1.0.0"
+  sha256 "5247786f2c615ee0d442dc1e3d0fd46f2beb134255fb3df2b79b631203ad8778"
+  license "MIT"
+
+  depends_on xcode: ["12.0", :build]
+  depends_on xcode: "12.0"
+
+  def install
+    system "swift", "build", "--disable-sandbox", "--configuration", "release"
+    bin.install ".build/release/swiftmetamodelgenerator"
+  end
+end