Migrate to Capacitor 6

[vovagorodok]

Currently Google Play accepts minimal SDK ver 34. Need to migrate blichess to Capacitor 6

[vovagorodok]

Porting branch: bluetooth...vovagorodok:blichess:migrate-to-capacitor-6

Issue when connecting to lichess.org
File: https://localhost/ - Line 0 - Msg: Access to fetch at 'https://lichess.org/' from origin 'https://localhost' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.

[vovagorodok]

Asking in lichobile: lichess-org#2542

[vovagorodok]

Created discussion: ionic-team/capacitor#7826

[vovagorodok]

Fixed by adding to capacitor.config.ts (according to https://capacitorjs.com/docs/guides/autofill-credentials#set-capacitor-server-hostname):

  server: {
    hostname: 'localhost',
    androidScheme: 'http'
  }

[vovagorodok]

Done by: 2f89e9d