v5 Upgrade Guide (CPP usage)

Upgrade Guide for GAS Companion and ue5 release related to cpp required changes

Summary

All deprecated classes and API have been removed
Runtime modules have been consolidated into a single one. ModularGASCompanion module has been removed and all classes from that module moved to GASCompanion module.
All MGC prefixed classes have been renamed and now prefixed with GSC.
ModularGASCompanionEditor module removed. Only existed to backport ue5 functionality related to Game Features (now handled in engine directly)

WIP

Gameplay Actors

All Modular Gameplay Actors have been moved from ModularGASCompanion to GASCompanion module.
Renamed with GSC prefix (so for instance: AModularCharacter became AGSCModularCharacter)
Relative path remains the same (eg. ModularGameplayActors/...)

if you were using those classes, and subclassing them. You need to adjust the include and class name.

Example:

Previous implementation of GSCAbilitySystemComponent has been replaced by MGCAbilitySystemComponent.

MGCAbilitySystemComponent has been renamed to GSCAbilitySystemComponent and moved to GASCompanion runtime module.