bug: character name can contain comma

[tobiasehlert]

Add support for characters to contain comma (,), like character Elessar, the Elfstone.

URLs:
https://api.tibiadata.com/v4/character/Elessar,+the+Elfstone
https://www.tibia.com/community/?subtopic=characters&name=Elessar,+the+Elfstone

Current application response:

{
  "information": {
    "api": {
      "version": 4,
      "release": "4.3.3",
      "commit": "1dff6db73d95e9a51fe830aa851fc78b4e96bd54"
    },
    "timestamp": "2025-02-17T15:17:48Z",
    "tibia_urls": [],
    "status": {
      "http_code": 400,
      "error": 10003,
      "message": "the provided character name is invalid"
    }
  }
}

Reported by Ricci on Discord.