Add BookMyShow adapter

[ankitranjan7]

Summary

• Add BookMyShow browser adapter for Indian movies, events, cinemas, and showtimes.
• Use visible UI extraction because BookMyShow is Cloudflare/browser-session gated and the listing data is visible on page.
• Add focused adapter tests and regenerate the CLI manifest.

Commands added

• bookmyshow movies --city <city> --limit <n> - movies currently shown for a BookMyShow city.
• bookmyshow events --city <city> --limit <n> - events listed for a city, including venue/category/price text.
• bookmyshow cinemas --city <city> --limit <n> - cinemas and addresses for a city.
• bookmyshow shows <movie> --city <city> --date <YYYYMMDD> --limit <n> - movie showtimes by title, event code, or movie URL.

Verification

• npm run test:adapter -- clis/bookmyshow/bookmyshow.test.js
• npm run build-manifest
• npm run check:silent-column-drop
• npm run check:typed-error-lint
• node dist/src/main.js browser bookmyshow-live verify bookmyshow/movies --strict-memory --trace retain-on-failure
• node dist/src/main.js browser bookmyshow-live verify bookmyshow/events --strict-memory --trace retain-on-failure
• node dist/src/main.js browser bookmyshow-live verify bookmyshow/cinemas --strict-memory --trace retain-on-failure
• node dist/src/main.js browser bookmyshow-live verify bookmyshow/shows --strict-memory --trace retain-on-failure
• npm test
• npm run typecheck