[nostalgia] Rename Studio Plugins to Modules, add support for builtin Studio modules, make existing modules builtin

src/nostalgia/studio/builtinmodules.hpp

@@ -0,0 +1,22 @@
+/*
+ * Copyright 2016 - 2020 gary@drinkingtea.net
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include <nostalgia/core/studio/module.hpp>
+
+namespace nostalgia::studio {
+
+[[maybe_unused]] // GCC warns about the existence of this "unused" constexpr list in a header file...
+constexpr auto BuiltinModules = {
+	[] {
+		return new core::Module();
+	},
+};
+
+}