gates/role_gate library

1. flutter_access_gates package
2. documentation
3. gates/role_gate.dart

flutter_access_gates package

1. Libraries
2. adapters/access_context
3. adapters/access_context_provider
4. adapters/access_strategy
5. adapters/access_strategy_provider
6. adapters/access_strategy_registry
7. adapters/feature_flags_strategy_adapter
8. adapters/multi_access_strategy
9. feature_flags
10. flutter_access_gates
11. gates/access_gate
12. gates/composite_access_gate
13. gates/context_access_gate
14. gates/debug_gate
15. gates/feature_gate
16. gates/gate_builder
17. gates/permission_gate
18. gates/role_gate
19. gates/simple_feature_gate