Add test for EIP-1559 txs

[Raneet10]

Description

This PR adds a command to run EIP-1559 tx as a test.

Changes

• Bugfix (non-breaking change that solves an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (change that is not backwards-compatible and/or changes current functionality)
• New test case for remote devnet

Checklist

• I have added at least 2 reviewer or the whole pos-v1 team
• I have added sufficient documentation in code
• I will be resolving comments - if any - by pushing each fix in a separate commit and linking the commit hash in the comment reply

Testing

• I have tested this code manually on local environment
• I have tested this code manually on remote devnet using express-cli
• I have tested this code manually on mumbai

[linear]

POS-538 Run EIP-1559 test script in CI

https://github.com/maticnetwork/eip1559-test-scripts contains some useful functions that test old tx and new tx after EIP-1559. However, it is not directly usable/deployable in CI due to some problems. For example, we need to manually modify .env file to change private keys, and provide mnemonic words, which is not available in devnet.

Also, testAll.js will not exit when either tests succeed or fail. We should make the script exit with non-zero code when some test fail.