Change Gmail OAuth setup

[wmontwe]

This adds new Gmail OAuth client ids to allow migration from the TB desktop (TBD) project to the TB Android (TBA) project. With this, the configuration for beta and release could coexist in TBD and TBA. We could migrate from one to the other if needed.

Debug:

• Is already on TBA

Daily:

• Use the new client id from TBA

Beta:

• Change the client id to a dedicated desktop version with the desktop namespace
• This should allow us to migrate users from the old client id to this intermediate id.
• Once enough users migrated we could delete the old client id from TBD and create a new one in TBA using the proper package id.

Release:

• Change the client id to a dedicated desktop version with the desktop namespace
• This should give us options to do a production release when TBA is not ready yet and migrate later.
• If TBA is ready in time we could switch before releasing the first version.

[cketti]

I wasn't able to sign in with beta or release. After the consent screen the browser seems to be redirected to the google.com start page.

[wmontwe]

Should work now, the callback was not registered.

[wmontwe]

@cketti this is working now and we need the changes for release and beta to have a working gmail setup. The included client ids stop working soon.