Buffer TFT Commands with an Event Queue

[Bonifatius94]

Issue:

• currently, there's a decoupling between processing the TFT chat messages and executing the TFT commands
• the decoupling is achieved using a callback function, so spamming lots of TFT chat messages might cause TFT commands to be executed concurrently
• but events need to be synchronized in order not to interfere with each other

Suggested Solution:

• put an event queue in the TFTChatbot class (as member)
• from design perspective, e.g. implement it using a producer/consumer pattern
• new behavior:
  • when a command gets elected by chat vote, queue it up instead of executing it right away
  • add another thread serving as a consumer of the event queue, executing the commands one after another

[Bonifatius94]

Nevermind, actually the notifications are synchronous within the TFT connection thread. So the commands are processed one after another. But decoupling the chat with executing the commands would be nice anyways in case the chatbot needs to handle lots of load. There need to be further investigations about chat load for sure.