Adding chain support for BattleChain

### Name

BattleChain

### Environment

Mainnet

### Chain Id

626

### Endpoint

https://mainnet.battlechain.com

### How can we get in contact with your team if we have questions?

Telegram: @Equious
Email: travis@cyfrin.io

### Example ERC20 token name

BattleChain Demo Token

### Example ERC20 contract address

0x29509F1CcC3f848d22eFBbB948C2408517387F68

### Start Block

41