CLI: --fetch-mode curl is advertised but rejected for place scraping

[MozzamShahid]

File / lines: src/gmaps_scraper/cli.py, lines 98-106 and 265-270

Problem: The parser accepts --fetch-mode curl and the help text presents it as a normal choice:

--fetch-mode {auto,curl,browser}
Fetch mode: auto (curl_cffi with browser fallback), curl, or browser.

But for --kind place, main() exits with an error:

if args.collection_mode == "curl":
    parser.error("Place scraping currently requires browser mode. Use `--fetch-mode browser`.")

Users discover this only after invocation.

Suggested fix:

• Option A: Use argparse subparsers (gmaps-scraper list ... and gmaps-scraper place ...) so each subcommand exposes only valid options.
• Option B (minimal): Update the help string for --fetch-mode to note that curl is ignored for --kind place, and reject it earlier with a clearer message.

Difficulty: medium
Impact: Medium — reduces user confusion and CLI friction.