Controller mapping support?

[jicama]

Is your feature request related to a problem? Please describe.
The control mapping function in the game itself currently has a serious shortcoming: the default controller settings use the same button for multiple functions, but it's impossible to assign multiple functions to a button other than the default: if I change dodge to R1, "interaction - confirm" becomes unbound.

I've reported this issue to MiHoYo tech support, but it didn't seem like they were interested in addressing it.

Describe the solution you'd like
Enhance BetterHI3Launcher to adjust controls without this restriction.

Additional context
The controls seem to be stored in JSON in

HKCU\SOFTWARE\miHoYo\Honkai Impact 3rd\GENERAL_DATA_V2_ActionBindingLocalDataDic_h2900329236

[BuIlDaLiBlE]

Sorry, I won't be working on this one. It's a nice suggestion though so I won't close it. If anyone feels like doing a PR for it, that would be great!