Fully migrate to TibiaData API

[Galarzaa90]

Moving NabBot queries to TibiaData will improve it's stability because failed calls will be reduced drastically. However, not all of NabBot functions are supported yet.

To move

• [x] get_character()
• [x] get_world()

Implemented in TibiaData v2

• [x] get_guild_online() get_guild()
• [ ] get_highscores() - implemented in /highscores, needs to be implemented in task
• [ ] get_house()

To implement from API

• [x] get_news() - Get the latest news from Tibia.com, a command to see recent articles or an announcer

Even though only 2 functions can be updated for now, those two are the most heavy functions, meaning that the rest of the functions that fetch tibia.com directly will have an improvement.

This issue is related to #61, #50, #51

[Galarzaa90]

I'm closing this issue, as nothing else will be migrated to TibiaData.