Describe the bug
the reload() function of the LazySettings class does not clear the _loaded_hooks attribute. Because of that, when trying to reload and rerun the loaders, the hook won't run again.

To Reproduce
Steps to reproduce the behavior:

Configure a post hook just like in the docs. Create a DynaConf object and then run reload() on the object.

Expected behavior
The post hook should run after every reload.

Additional context
I'll be glad to make a PR for this myself.