Dynamic Trainer Battle Script Building

[u8-Salem]

Provides a framework for dynamically generating trainer battle scripts and reworks how trainer battle parameters are stored

Description

I provided an in-depth explanation here

Short version:

In the current version different variations of trainerbattles such as playing the encounter music or not are handled as entirely different trainer battle types. This introduces a framework to dynamically build the trainer battle script, depending on the provided parameters. So if the parameter for 'play music' is given, then that part of the script will be executed vise versa.
Also allows for easy extension and introduction of new variations (e.g. applying some movement to the trainer before the battle starts).

Also consolidates all parameters into a struct that lives in EWRAM and is easily accessible and mutable.

Also makes first steps to more clearly separate different types into these categories:

• normal trainer battles (single/doubles/approaching)
• multi trainer battles (single/double/wild)
• facility trainer battles (trainer hill/battle facilities)
• special trainer battles (e-reader/secret base)

Images

example of a simple modification with this framework:

Feature(s) this PR does NOT handle:

• does not handle rework of non-normal trainer battles
• see Scope section of the above linked document

Things to note in the release changelog:

• not sure what should go here tbh.
• probably link to the tutorial document when its done

Discord contact info

u8.salem