Adds the new api client

[JohNan]

Fixes issues #99, #98, #93

[modo1302]

hello, @JohNan, not sure if this is just for me, but ufter updating to 1.2.1 I'm getting 500 error while trying to add the integration:

[ElectricWeasel]

I have a trouble to login into Developer Portal using valid app credentials, getting 500 error. I sent email to Electrolux support, waiting for reply. Maybe related.
Regards
Rafał

[ElectricWeasel]

I had to clean mobile app data, relogin, accept T&C then account is available. Trying to use created key/tokens to connect integration.
With success!
Regards and thanks
Rafał

[ElectricWeasel]

Yet i noticed strange behaviour. I can control only Fan On/Off. Moreover trying to set ON give me an message
Failed to perform the action fan/turn_on. 406, message='Not Acceptable', url=URL('https://api.developer.electrolux.one/api/v1/appliances/950011383129002725087076/command')
But eventualy fan is ON. I can set OFF without an issue.
Also Ionizer, Safety Lock, UI Light are show but not available.
My device is Pure A9 (PA91-404GY)

Regards
Rafał