add String() to source interface

Signed-off-by: Troy Connor <[email protected]>

Author: troy0820

pkg/source/source.go

@@ -56,6 +56,10 @@ type TypedSource[request comparable] interface {
 	// Start is internal and should be called only by the Controller to start the source.
 	// Start must be non-blocking.
 	Start(context.Context, workqueue.TypedRateLimitingInterface[request]) error
+
+	// String enforces the custom source to adhere to the fmt.Stringer interface
+	// to print when being logged.
+	String() string
 }
 
 // SyncingSource is a source that needs syncing prior to being usable. The controller