chore: upgrade CLIProxyAPI dependency to v7 across the project

- Updated all references from v6 to v7 for `github.com/router-for-me/CLIProxyAPI`.
- Ensured consistency in imports within core libraries, tests, and integration tests.
- Added missing tests for new features in Redis Protocol integration.

sdk/auth/errors.go

@@ -3,7 +3,7 @@ package auth
 import (
 	"fmt"
 
-	"github.com/router-for-me/CLIProxyAPI/v6/internal/interfaces"
+	"github.com/router-for-me/CLIProxyAPI/v7/internal/interfaces"
 )
 
 // ProjectSelectionError indicates that the user must choose a specific project ID.