android: use deep links to connect (#339)

* simple case

* version almost working with true links

* show alerts in imperative way, like they were meant to

* connecting via links works

* add error handling to connections

Co-authored-by: Evgeny Poberezkin <2769109+epoberezkin@users.noreply.github.com>

apps/android/app/src/test/java/chat/simplex/app/ExampleUnitTest.kt

@@ -1,9 +1,8 @@
 package chat.simplex.app
 
+import org.junit.Assert.assertEquals
 import org.junit.Test
 
-import org.junit.Assert.*
-
 /**
  * Example local unit test, which will execute on the development machine (host).
  *