Add quest log - first iteration

[JaXt0r]

Hint: Should be done after #35 as we need to talk to NPCs properly to trigger quest updates.

Implement a quest log where we store information about active and finished quests. The information about quests comes from DaedalusVM. Whenever we do something quest relevant, an external function is triggered and provides us with details.

• implement external Daedalus functions for
  • Log_AddEntry
  • Log_CreateTopic
  • Log_SetTopicStatus
• Map a controller button to open the quest log / add a menu entry for the quest log
• implement the UI in simple 2D as in original G1 (first version)

Links:

• External functions of G1 with explanations (ger): https://www.worldofgothic.de/dl/index.php?go=g1functions