Support Arbitrum mainnet (#25)

* support base mainnet

* update gitignore

* update network config for base mainnet

* local

* skip arb mainnet test

Author: najienka

.env.sample

@@ -26,6 +26,10 @@ OPTIMISM_SEPOLIA_RPC_URL=https://sepolia.optimism.io
 ARBITRUM_SEPOLIA_PRIVATE_KEY=somehexstringwithoutthe0xprefix
 ARBITRUM_SEPOLIA_RPC_URL=https://api.zan.top/arb-sepolia
 
+# arbitrum mainnet
+ARBITRUM_MAINNET_PRIVATE_KEY=somehexstringwithoutthe0xprefix
+ARBITRUM_MAINNET_RPC_URL=https://public-arb-mainnet.fastnode.io
+
 # Sei testnet
 SEI_TESTNET_PRIVATE_KEY=somehexstringwithoutthe0xprefix
 SEI_TESTNET_RPC_URL=wss://sei-testnet.drpc.org

.github/workflows/build.yml

@@ -7,6 +7,8 @@ on:
 env:
   ARBITRUM_SEPOLIA_PRIVATE_KEY: ${{ secrets.ARBITRUM_SEPOLIA_PRIVATE_KEY }}
   ARBITRUM_SEPOLIA_RPC_URL: ${{ secrets.ARBITRUM_SEPOLIA_RPC_URL }}
+  ARBITRUM_MAINNET_PRIVATE_KEY: ${{ secrets.ARBITRUM_MAINNET_PRIVATE_KEY }}
+  ARBITRUM_MAINNET_RPC_URL: ${{ secrets.ARBITRUM_MAINNET_RPC_URL }}
   AVALANCHE_C_CHAIN_PRIVATE_KEY: ${{ secrets.AVALANCHE_C_CHAIN_PRIVATE_KEY }}
   AVALANCHE_C_CHAIN_RPC_URL: ${{ secrets.AVALANCHE_C_CHAIN_RPC_URL }}
   BASE_PRIVATE_KEY: ${{ secrets.BASE_PRIVATE_KEY }}