Remove deprecated features

[kamikazechaser]

• Openshift is now deprecated and no longer in service.
• Username resolution was patched on Telegrams side. tdlib is a better replacement.
• Default websocket bridge is offline.

[GochoMugo]

@kamikazechaser

1. Done.
2. I considered the use of tdlib but requiring dependents to install tdlib C library. This is a barrier. Instead, I propose that we run our own service that will support username resolution, just as we relied on PWRTelegram API. I am not entirely sure that tdlib supports username resolution? (cart before the horse 🤷‍♂️)
3. We should also have the service integrate the websocket bridge (we can re-use @GingerPlusPlus work).

[kamikazechaser]

Sure, I'll see on how we can get that up and running.

[pugson]

Any updates on username resolution? That would be super handy.

[kamikazechaser]

You need to use ContactsResolve with MtProto to get username/phone -> userId. userId -> username is also possible.