Add BSC, MATIC, ARB1 all using chainId

[makoto]

Changes

• Fix convertEVMChainIdToCoinType logic.
• In addition to ARB1, add back MATIC and BSC using convertEVMChainIdToCoinType (not using SLIP44 cointype)

Dependencies.

Once this change is merged, the following should happen in the order listed.

• announce the new chainId support on blog with the upcoming breaking changes
• Investigate if there are any dapps/wallet which support EVM chains #319
• Change EVM compatible chains to use convertEVMChainIdToCoinType(chainId) instead of coinType #318
• Ask dapps/wallets to change old cointype
• Add other EVM compatible chains (eg: Loopring, boba?)

NOTE

The following chains are EVM compatible chains but they support multiple address formats.

• NEAR (it takes both hex and string as their own name service)
• AVAX (only C-chain supports hex checksum with C- prefix.)
• HARMONY (hex checksum and bech32)

We could either keep them out of scope, or add separate entities (AVAX, AVAXP, AVAXC, etc) for a single chain

NOTE 2

Some of layer 2s like zksync, starkware have their own address format so they are out of scope.