[WIP] Update Smartthings binding for new API

[lo92fr]

This pull request is about rewriting the Smartthings addons that is not working anymore since a few month because of deep change in the samsung API.

This is link to issue : #16946
And also to discussion in communauty forum : https://community.openhab.org/t/smartthings-binding-eol/138750/19

This is currently work in progress.
What is working so far:

• Creation of a new Smarthings Cloud Hub Things to handle request to Samsung API.
• OAuth authorization schema to samsung account.
• Automatic discovery of device link to the samsung account,
• Some basic channel update are working : mainly switch and dimmer on light device.
• Very basic try to start implements device status update.
• Uncomplete handling of type registry on openhab side to handle samsung device/components/capabilites schema.

To start testing the new binding, you will need to create a samsung smartapp using the smarthings cli.
https://github.com/SmartThingsCommunity/smartthings-cli
This will be describe more in depth later, but you mainly need:

• To create an OpenHab app :
  smartthings apps:create

• To configure OAuth for this app:
  smartthings apps:oauth {myAppId}

• To generate a clientId/clientSecret for this oauth:
  smartthings apps:oauth:generate {myAppId]

You will get an answer like this one:

───────────────────────────────
Client Name Openhab
Scope r:locations:,r:devices:$,r:scenes:,w:installedapps,r:installedapps,w:rules:,x:scenes:,r:hubs:,r:rules:,x:devices:,w:devices:$,w:locations:,r:devices:,w:devices:,x:locations:*,x:devices:$
Redirect Uris https://api.smartthings.com/installedapp,https://localhost:8443/connectsmartthings
OAuth Client Id 39bf5964-xxxx-xxxx-xxxx-xxx
OAuth Client Secret efeabe17-xxxx-xxxx-xxxx-xxx
───────────────────────────────

You can after create the Smarthings Cloud Hub in Openhab, filling the clientId and clientSecret as parameters.
And then do a discovery scan to start using the binding.

Best regards,
Laurent.