Telegramflow fix

[matzuk]

Changes:

1. I was forced to update the Kotlin Gradle plugin to work with a new version of Kotlin flows. That's why I removed a code about Dokka and Publication temporary (honestly, You didn't publish this library, that's why I hope it's not critical). Also, I raised versions of other libraries.
2. Refactoring of TelegramFlow. I used callbackFlow and transformed it into SharedFlow with a scope = CoroutineScope(SupervisorJob() + Dispatchers.IO). Also, I wrapped sendFunctionAsync into context = Dispatchers.IO.
3. Any very small changes. The most important is a user can get flows from TelegramFlow only after the calling of attachClient method.