feat: integrate LNBits wallet schema and configuration

- Added LNBits wallet schema to the admin UI, including validation and input components.
- Updated the services index to include LNBits in the available wallet options.
- Enhanced the wallet selection component to handle LNBits configuration input.

packages/admin-ui/src/pages/Services/schemas/lnbits.js

@@ -0,0 +1,36 @@
+import * as Yup from 'yup'
+
+import {
+  SecretInput,
+  TextInput,
+} from '../../../components/inputs/formik'
+
+import { secretTest } from './helper'
+
+export default {
+  code: 'lnbits',
+  name: 'LNBits',
+  title: 'LNBits (Wallet)',
+  elements: [
+    {
+      code: 'endpoint',
+      display: 'LNBits Server URL',
+      component: TextInput,
+    },
+    {
+      code: 'adminKey',
+      display: 'Admin Key',
+      component: SecretInput,
+    },
+  ],
+  getValidationSchema: account => {
+    return Yup.object().shape({
+      endpoint: Yup.string('The endpoint must be a string')
+        .max(200, 'The endpoint is too long')
+        .required('The endpoint is required'),
+      adminKey: Yup.string('The Admin Key must be a string')
+        .max(200, 'The Admin Key is too long')
+        .test(secretTest(account?.adminKey)),
+    })
+  },
+}