Add polkadot chains (#529)

Author: smiasojed

Cargo.lock

@@ -183,6 +183,8 @@ pub fn has_different_gas_calc(chain_id: u64) -> bool {
                     | NamedChain::MoonbeamDev
                     | NamedChain::Moonriver
                     | NamedChain::PolkadotTestnet
+                    | NamedChain::Kusama
+                    | NamedChain::Polkadot
             );
     }
     false

crates/cli/src/utils/cmd.rs

@@ -520,6 +520,9 @@ pub fn rpc_endpoints() -> RpcEndpoints {
         ("bsc", RpcEndpointUrl::Url(next_rpc_endpoint(NamedChain::BinanceSmartChain))),
         ("avaxTestnet", RpcEndpointUrl::Url("https://api.avax-test.network/ext/bc/C/rpc".into())),
         ("moonbeam", RpcEndpointUrl::Url("https://moonbeam-rpc.publicnode.com".into())),
+        ("polkadotTestnet", RpcEndpointUrl::Url("https://eth-rpc-testnet.polkadot.io".into())),
+        ("kusama", RpcEndpointUrl::Url("https://eth-rpc-kusama.polkadot.io".into())),
+        ("polkadot", RpcEndpointUrl::Url("https://eth-rpc.polkadot.io".into())),
         ("rpcEnvAlias", RpcEndpointUrl::Env("${RPC_ENV_ALIAS}".into())),
     ])
 }