Google Play Scraper

I want to use the Google Play Scraper service on Fast Marketplace.

## Setup (skip if you already have Fast Marketplace set up)
1. Open the marketplace skill: https://marketplace.fast.xyz/skill.md
2. Fund a Fast wallet on mainnet.
3. Provide one or more search terms or known Google Play app IDs.
4. Keep the returned job token and poll the marketplace job route for completion.

## Available Endpoints

### Search Apps ($0.0001 USDC)
curl -X POST "https://api.marketplace.fast.xyz/api/apify-google-play/search-apps" \
  -H "Content-Type: application/json" \
  -d '{
  "country": "us",
  "maxApps": 20,
  "maxReviews": 50,
  "searchTerms": [
    "habit tracker"
  ]
}'

Use this for Android app-store research, app listing analysis, and review monitoring.

For paid endpoints: the first call returns 402. Authorize payment with your Fast wallet and retry with the payment signature header.