Events detectors

[sofiazcoaga]

Includes:

• Storage change events detector: emits a warning when storage is modified in any way and the contract does not emit an event.
• Storage change events test cases.
• Token Interface events detector: emits a warning when the token interface trait is implemented and the functions belonging to it that should emit events do not.
• Token Interface events test cases.

[github-actions]

🎉 General Rust Workflow Summary 🎉

Component	Status
Check Rust Format	✅ Successful
Lint with Clippy	✅ Successful

The workflow has completed. Great job! 🚀

[github-actions]

🎉 Test Detectors Workflow Summary 🎉

Component	Status
Detector Validation	✅ Successful
Build on Ubuntu	✅ Successful
Build on macOS	✅ Successful
Tests Execution	✅ Successful

The workflow has completed. Great job! 🚀

[tenuki]

sofi check the comments let us know whatever you thinkg about it..