config system + move api to frontend

src/main/core/PluginRegistry.js

@@ -16,6 +16,11 @@ export default class PluginRegistry {
     }
 
     list() {
-        return Array.from(this.plugins.values())
+        return Array.from(this.plugins.values()).map((plugin) => ({
+            id: plugin.id,
+            name: plugin.name,
+            description: plugin.description,
+            configSchema: plugin.configSchema,
+        }))
     }
 }