layers/signature_layer library

1. simosec package
2. documentation
3. layers/signature_layer.dart

simosec package

1. Libraries
2. core/security_engine
3. core/security_layer
4. layers/authorization_layer
5. layers/logging_layer
6. layers/payload_size_layer
7. layers/quantum_layer
8. layers/rate_limit_layer
9. layers/sandbox_layer
10. layers/signature_layer
11. layers/validation_layer
12. models/request_context
13. models/security_config
14. models/security_result
15. simosec
16. storage/memory_storage
17. storage/redis_storage
18. storage/storage_adapter
19. utils/crypto_utils
20. utils/helpers
21. utils/validators