Define contract event types for group operations

[Akshola00]

Description

Define event types that will be emitted when key contract operations occur (group creation, member updates, distributions).

Implement events in src/base/events.rs.

Relevant files:

• contract/src/base/events.rs

Acceptance Criteria

• Define GroupCreated event with: group_id, creator, token
• Define MembersUpdated event with: group_id, member_count
• Define DistributionProcessed event with: group_id, total_amount
• Each event includes timestamp or other relevant metadata
• Events are properly typed and documented
• Events are exported for use in contract functions
• Relevant contract tests are written
• All contract tests pass
• Contract code builds successfully
• Contract code is properly formatted

Dependencies

C-2 (Core data types)

Additional Notes

• Consider what data is needed for event consumers (e.g., frontend, indexers)
• Events are crucial for off-chain tracking and auditing

[cyber-punk112]

I’ve gone through this issue and the related codebase sections. I believe I can tackle this, but I do have one quick clarifying question regarding [specific technical detail] before I start. Assuming that works as I think it does, I’m confident I can handle this. Please assign it to me.

[grantfox-oss]

🦊 GrantFox — @muhammad-codes112 has been assigned to this issue as part of the Third Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #56)
2. Your PR will be reviewed by the Web3Novalabs maintainers

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