Add Ptr function to common

A new function Ptr has been added to common/cond.go. This function returns address of any type of object that is passed as an argument to it. This enhancement will be useful in many scenarios where pointer to an object is required.

common/cond.go

@@ -336,6 +336,10 @@ func DefaultValue[T any]() T {
 	return defaultValue
 }
 
+func Ptr[T any](obj T) *T {
+	return &obj
+}
+
 func Close(closers ...any) error {
 	var retErr error
 	for _, closer := range closers {