Use shared event types across all games

[FaisalAl-Tameemi]

Problem: Each game currently implements its own Event structs.

Solution: Move events into a common set define within crate::logics::types or create::logics::events (as a new mod).

Ref Issue: use-ink/ink#1243
Ref PR (open): use-ink/ink#1222

[FaisalAl-Tameemi]

NOTE: some approaches to achieving this might require a bit of what seems like redundancy but that's acceptable since achieving a standardized definition is the main goal here.