Add linea method and fix docs (#443)

docs/04-upstream-config.adoc

@@ -220,10 +220,6 @@ You can specify this modes through `connector-mode` parameter in connection conf
 - `eth_getUncleByBlockNumberAndIndex`
 - `eth_feeHistory`
 - `eth_getLogs`
-- `eth_getFilterChanges`
-- `eth_newFilter`
-- `eth_newBlockFilter`
-- `eth_newPendingTransactionFilter`
 
 .Plus following methods are answered directly by Dshackle
 - `net_version`

src/main/kotlin/io/emeraldpay/dshackle/upstream/calls/DefaultEthereumMethods.kt

@@ -324,6 +324,10 @@ class DefaultEthereumMethods(
                     .plus(harmonySpecialMethods)
                     .plus(harmonyPossibleNotIndexedMethods)
 
+            Chain.LINEA__MAINNET, Chain.LINEA__GOERLI -> listOf(
+                "linea_estimateGas",
+            )
+
             else -> emptyList()
         }
     }