feat: add configurable targetName for widget extension

[tarikfp]

Summary

Add optional targetName prop to ConfigPluginProps that allows customizing the widget extension target name.

Problem

Currently, the widget extension target name is hardcoded to {AppName}LiveActivity:

const targetName = `${IOSConfig.XcodeUtils.sanitizedName(config.name)}LiveActivity`

This makes it impossible to match existing provisioning profiles or credentials, especially when migrating from other solutions like @bacons/apple-targets.

Solution

Added optional targetName prop that allows full customization while maintaining backwards compatibility.

Usage

// app.config.js
[
  "voltra",
  {
    groupIdentifier: "group.com.example.app",
    targetName: "widget", // Optional - defaults to "{AppName}LiveActivity"
  }
]

Changes

• plugin/src/types/plugin.ts - Added targetName prop to ConfigPluginProps
• plugin/src/index.ts - Use configurable targetName with fallback
• website/docs/api/plugin-configuration.md - Added documentation

Checklist

• Follows conventional commits
• Backwards compatible
• TypeScript types updated
• Documentation updated

[vercel]

@tarikfp is attempting to deploy a commit to the Callstack Team on Vercel.

A member of the Team first needs to authorize it.

[V3RON]

Nice! Thank you for the contribution 💪