Implement group creation function with validation

[Akshola00]

Description

Implement the create function to create new payroll groups with proper validation and event emission.

Add implementation in src/lib.rs.

Relevant files:

• contract/src/lib.rs

Acceptance Criteria

• Function accepts: creator (Address), token (Symbol), name (Symbol)
• Function validates creator is not zero address
• Function generates unique group ID
• Function stores group in contract state
• Function emits GroupCreated event
• Function returns the new group ID
• Rejects invalid inputs with proper error types
• Relevant contract tests are written
• All contract tests pass
• Contract code builds successfully
• Contract code is properly formatted

Dependencies

C-1 (Error types), C-2 (Data types), C-3 (Events), C-4 (Trait interface)

Additional Notes

• Group ID can be sequential number or hash-based
• Store in a contract data map for efficient lookup
• Consider gas costs for storage

[MicD746]

Hello Maintainer, please can I work on this issue and give you a better result

[Ugasutun]

Hi, I'd like to work on this issue. I can implement the payroll group "create" function with input validation, unique ID generation, contract storage, and "GroupCreated" event emission. I'll also add tests for successful and invalid creation cases and verify the contract builds, tests pass, and formatting is clean.

[Muhammadcodes112]

I’m interested in contributing to this issue because it’s a good opportunity to improve the project while working with the existing codebase. I’ve reviewed the requirements and will make sure the implementation follows the project’s conventions, is properly tested, and addresses the issue without introducing unrelated changes.

[Muhammadcodes112]

I’m interested in contributing to this issue because it’s a good opportunity to improve the project while working with the existing codebase. I’ve reviewed the requirements and will make sure the implementation follows the project’s conventions, is properly tested, and addresses the issue without introducing unrelated changes.

[grantfox-oss]

🦊 GrantFox — @Muhammadcodes112 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 #58)
2. Your PR will be reviewed by the Web3Novalabs maintainers

Good luck! Track your progress on GrantFox.