add dataconnect sdk app setup validation

[aalej]

Description

Add validation when prompting which apps to add DataConnect SDK. Ideally, the scenario if (!pickedApps || !pickedApps.length) will never happen, but in the unlikely chance it does, it would be a good idea to keep it and throw an error

Scenarios Tested

=== Dataconnect Setup
i  dataconnect: ensuring required API firebasedataconnect.googleapis.com is enabled...
i  dataconnect: ensuring required API sqladmin.googleapis.com is enabled...
✔ Your project already has existing services. Which would you like to set up local files for? us-central1/test-dc-2
⚠  dataconnect: CloudSQL no cost trial has already been used on this project.
✔  dataconnect: Detected existing apps web-app-2 (web), web-app (web)
? Which apps do you want to set up Data Connect SDKs in? (Press <space> to select, <a> to toggle all, <i> to invert selection, and <enter> to proceed)
❯◯ web-app-2 (web)
 ◯ web-app (web)
> Please choose at least one app.

Sample Commands

[gemini-code-assist]

Summary of Changes

Hello @aalej, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a crucial validation mechanism within the DataConnect SDK setup flow. It specifically addresses the scenario where a user might attempt to proceed without selecting any applications, by adding a prompt-level validation that requires at least one app to be chosen. This enhancement improves the robustness and user-friendliness of the setup process, preventing potential errors downstream.

Highlights

• DataConnect SDK Setup Validation: Added a validation step to the DataConnect SDK app setup process, ensuring that users select at least one application before proceeding.
• Improved User Experience: The interactive prompt for selecting apps now includes a real-time validation message if no apps are chosen, guiding the user to make a selection.

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[gemini-code-assist]

Code Review

The pull request introduces client-side validation to a checkbox prompt in src/init/features/dataconnect/sdk.ts. A validate function has been added to the checkbox configuration to ensure that users select at least one app, returning an error message if no choices are made. There are no review comments provided for these changes.

[fredzqm]

Good idea! Thank you!