Add token's type to response of tokenlist

apps/block_scout_web/lib/block_scout_web/etherscan.ex

@@ -163,7 +163,8 @@ defmodule BlockScoutWeb.Etherscan do
         "contractAddress" => "0x0000000000000000000000000000000000000000",
         "name" => "Example Token",
         "decimals" => "18",
-        "symbol" => "ET"
+        "symbol" => "ET",
+        "type" => "ERC-20"
       }
     ]
   }

apps/block_scout_web/lib/block_scout_web/views/api/rpc/address_view.ex

@@ -168,7 +168,8 @@ defmodule BlockScoutWeb.API.RPC.AddressView do
       "contractAddress" => to_string(token.contract_address_hash),
       "name" => token.name,
       "decimals" => to_string(token.decimals),
-      "symbol" => token.symbol
+      "symbol" => token.symbol,
+      "type" => token.type
     }
   end
 

apps/explorer/lib/explorer/etherscan.ex

@@ -249,7 +249,8 @@ defmodule Explorer.Etherscan do
           contract_address_hash: tb.token_contract_address_hash,
           name: t.name,
           decimals: t.decimals,
-          symbol: t.symbol
+          symbol: t.symbol,
+          type: t.type
         }
       )