Add checkbox-list custom field plugin to Strapi

- Introduced a new custom field type 'checkbox-list' with associated input component.
- Updated package.json to reflect the new plugin name.
- Added necessary server-side files for plugin registration, including bootstrap, destroy, and service methods.
- Updated package-lock.json to include new dependencies and versions.
- Enhanced admin interface with custom field registration and input handling.

server/src/routes/content-api/index.js

@@ -0,0 +1,16 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.default = () => ({
+    type: 'content-api',
+    routes: [
+        {
+            method: 'GET',
+            path: '/',
+            // name of the controller file & the method.
+            handler: 'controller.index',
+            config: {
+                policies: [],
+            },
+        },
+    ],
+});