sync/waitgroup: initial sync.WaitGroup wrapper with context support (#319)

Reviewed-on: #319
Co-authored-by: Vasiliy Tolstov <v.tolstov@unistack.org>
Co-committed-by: Vasiliy Tolstov <v.tolstov@unistack.org>

logger/unwrap/unwrap.go

@@ -56,9 +56,9 @@ type Wrapper struct {
 	s                fmt.State
 	pointers         map[uintptr]int
 	opts             *Options
+	takeMap          map[int]bool
 	depth            int
 	ignoreNextType   bool
-	takeMap          map[int]bool
 	protoWrapperType bool
 	sqlWrapperType   bool
 }