generic upstreams introduced (#317)

- added base implementation of upstreams/multistreams
- connectors were generalised, chain specific logic was extracted to ChainSpecific class
- StarkNet network support based on generic upstreams added

foundation/src/main/kotlin/org/drpc/chainsconfig/ChainsConfig.kt

@@ -1,6 +1,7 @@
 package io.emeraldpay.dshackle.config
 
 import io.emeraldpay.dshackle.foundation.ChainOptions
+import java.math.BigInteger
 import java.time.Duration
 
 data class ChainsConfig(private val chains: List<ChainConfig>) : Iterable<ChainsConfig.ChainConfig> {
@@ -22,7 +23,7 @@ data class ChainsConfig(private val chains: List<ChainConfig>) : Iterable<Chains
         val laggingLagSize: Int,
         val options: ChainOptions.PartialOptions,
         val chainId: String,
-        val netVersion: Long,
+        val netVersion: BigInteger,
         val grpcId: Int,
         val code: String,
         val shortNames: List<String>,
@@ -38,7 +39,7 @@ data class ChainsConfig(private val chains: List<ChainConfig>) : Iterable<Chains
                 1,
                 ChainOptions.PartialOptions(),
                 "0x0",
-                0,
+                BigInteger.ZERO,
                 0,
                 "UNKNOWN",
                 emptyList(),

foundation/src/main/kotlin/org/drpc/chainsconfig/ChainsConfigReader.kt

@@ -8,6 +8,7 @@ import org.yaml.snakeyaml.nodes.MappingNode
 import org.yaml.snakeyaml.nodes.NodeTuple
 import org.yaml.snakeyaml.nodes.ScalarNode
 import org.yaml.snakeyaml.nodes.Tag
+import java.math.BigInteger
 
 class ChainsConfigReader(
     private val chainsOptionsReader: ChainOptionsReader,
@@ -74,7 +75,7 @@ class ChainsConfigReader(
             ?: throw IllegalArgumentException("undefined code for $blockchain")
         val grpcId = getValueAsInt(node, "grpcId")
             ?: throw IllegalArgumentException("undefined code for $blockchain")
-        val netVersion = getValueAsLong(node, "net-version") ?: chainId.drop(2).toLong(radix = 16)
+        val netVersion = getValueAsLong(node, "net-version")?.toBigInteger() ?: BigInteger(chainId.drop(2), 16)
         val shortNames = getListOfString(node, "short-names")
             ?: throw IllegalArgumentException("undefined shortnames for $blockchain")
         return ChainsConfig.ChainConfig(