add http_get_cache

experimental/http_get_cache/example/macos/Flutter/GeneratedPluginRegistrant.swift

@@ -0,0 +1,12 @@
+//
+//  Generated file. Do not edit.
+//
+
+import FlutterMacOS
+import Foundation
+
+import sqlite3_flutter_libs
+
+func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+  Sqlite3FlutterLibsPlugin.register(with: registry.registrar(forPlugin: "Sqlite3FlutterLibsPlugin"))
+}