libs: wrap mutexes for build flag with godeadlock (#5126)

## Description

This PR wraps the stdlib sync.(RW)Mutex & godeadlock.(RW)Mutex. This enables using go-deadlock via a build flag instead of using sed to replace sync with godeadlock in all files

Closes: #3242

libs/sync/deadlock.go

@@ -0,0 +1,17 @@
+// +build deadlock
+
+package sync
+
+import (
+	deadlock "github.com/sasha-s/go-deadlock"
+)
+
+// A Mutex is a mutual exclusion lock.
+type Mutex struct {
+	deadlock.Mutex
+}
+
+// An RWMutex is a reader/writer mutual exclusion lock.
+type RWMutex struct {
+	deadlock.RWMutex
+}

libs/sync/sync.go

@@ -0,0 +1,15 @@
+// +build !deadlock
+
+package sync
+
+import "sync"
+
+// A Mutex is a mutual exclusion lock.
+type Mutex struct {
+	sync.Mutex
+}
+
+// An RWMutex is a reader/writer mutual exclusion lock.
+type RWMutex struct {
+	sync.RWMutex
+}