Move mutex and mem create/cleanup functions into mutex.c and mem.c respectively

kernel/proc/mutex.c

@@ -1,11 +1,24 @@
 #include <libk/assert.h>
 #include <libk/rbtree.h>
 #include <libk/std.h>
+#include <libk/string.h>
 #include <proc/mutex.h>
 #include <proc/proc.h>
 #include <sync/spin_lock.h>
 #include <sys/debug.h>
 
+bool proc_create_resource_mutex (struct proc_mutex* mutex) {
+  memset (mutex, 0, sizeof (*mutex));
+
+  return true;
+}
+
+void proc_cleanup_resource_mutex (struct proc* proc, struct proc_resource* resource) {
+  struct proc_mutex* mutex = &resource->u.mutex;
+
+  proc_mutex_unlock (proc, mutex);
+}
+
 void proc_mutex_lock (struct proc* proc, struct proc_mutex* mutex) {
   spin_lock_ctx_t ctxmt;