Update local.toml.example in packages/backend

### TL;DR

This pull request consolidates all shared component exports into a new `index.ts` file within the `components/shared` directory. The purpose is to streamline and centralize the exports of shared components for improved maintainability.

### What changed?

- Created a new `index.ts` file in the `components/shared` directory that exports all shared components.
- Updated import statements to use the new centralized `index.ts` file instead of individual component files.

### How to test?

1. Run the frontend application.
2. Navigate through the application to ensure all shared components render correctly without console errors.

### Why make this change?

The motivation behind this change is to organize exports of shared components in a single file. This enhances code maintainability and simplifies the process of importing shared components across the project.

---

packages/backend/environments/local.toml.example

@@ -3,7 +3,7 @@
   port = 8000
   gqlPath = "/graphql"
   [server.session]
-    secret = "p4yfpkqnddkui2iw7t6hbhwq74lbqs7bhobvmfhrowoi"
+    secret = ""
     appOriginUrl = "http://localhost:3000"
     trustProxy = false
     domain = "localhost"
@@ -17,6 +17,16 @@
     clientId = ""
     clientSecret = ""
 
+[google]
+  clientId = ""
+  clientSecret = ""
+
+[turnkey]
+  apiBaseUrl = "https://api.turnkey.com"
+  apiPrivateKey = ""
+  apiPublicKey = ""
+  defaultOrganizationId = ""
+
 [registryConfig]
   fetchDeploymentRecordDelay = 5000
   restEndpoint = "http://localhost:1317"