Snode version patch (#1561)

* Snode version number

Getting the version number from the API and checking the last node in the onion routing, making sure its version is at least 2.8.0

* Clearing the snode and onion request dbs on launch

* Removing logs

* Tweak to snode filtering

* PR feedback

libsignal/src/main/java/org/session/libsignal/database/LokiAPIDatabaseProtocol.kt

@@ -10,6 +10,7 @@ interface LokiAPIDatabaseProtocol {
     fun getSnodePool(): Set<Snode>
     fun setSnodePool(newValue: Set<Snode>)
     fun getOnionRequestPaths(): List<List<Snode>>
+    fun clearSnodePool()
     fun clearOnionRequestPaths()
     fun setOnionRequestPaths(newValue: List<List<Snode>>)
     fun getSwarm(publicKey: String): Set<Snode>?

libsignal/src/main/java/org/session/libsignal/utilities/Snode.kt

@@ -1,6 +1,6 @@
 package org.session.libsignal.utilities
 
-class Snode(val address: String, val port: Int, val publicKeySet: KeySet?) {
+class Snode(val address: String, val port: Int, val publicKeySet: KeySet?, val version: String) {
     val ip: String get() = address.removePrefix("https://")
 
     public enum class Method(val rawValue: String) {