feat: user about info

[terencedignon]

Adds support for Twitter's "about this account" feature. Returns account region, location accuracy, username change history, and verification status.

API: user_about() / user_about_raw()
CLI: twscrape user_about --username USERNAME

Tested with python examples/about_account.py and twscrape user_about --username sama

Closes #276

---

Example payload:

  {
    "__typename": "User",
    "core": {"screen_name": "sama", "name": "Sam Altman", "created_at": "..."},
    "about_profile": {
      "account_based_in": "United States",
      "location_accurate": true,
      "affiliate_username": "OpenAI",
      "source": "Web",
      "username_changes": {"count": "0"}
    },
    "rest_id": "1605",
    "verification_info": {
      "reason": {"verified_since_msec": "..."},
      "is_identity_verified": false
    }
  }

[terencedignon]

gentle ping on this. No worries if you think this is out of scope.

[doveppp]

AccountAbout.parse has a problem:

TypeError: int_or() missing 1 required positional argument: 'key'

[doveppp]

TypeError: int_or() missing 1 required positional argument: 'key'