Move this to homeassistant core

[rokam]

We'll be able to move this to core, but we need to do:

• separate the lib to access the devices
• add unittest to the component

I did create a repo for the first item: https://github.com/rokam/midea-local . I still need to create a release and add some tests.

[attilaersek]

Let me know if you need help in the development!