feat: add new features of v1 to v2

[0xSulpiride]

Description

• feat: websockets, new config params, relayers, gas price oracles and other fixes

tested on sepolia:

• https://sepolia.etherscan.io/tx/0x9cb71893dbd989af2f672706afbb6f7b3ec1988365b9454e0df85dbfdacdc7de
• https://sepolia.etherscan.io/tx/0x3687f9ca83d450c404734f1a77c39568fc0d5355a2780c46e718cb23256d1da5
• https://sepolia.etherscan.io/tx/0xf27d85b4e29a33a66eb91d692938cb94a2c35bd1db736e659afa660ad6d40997

3 failing tests are failing for all bundlers

Types of changes

What types of changes does your code introduce?
Put an x in the boxes that apply

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Other (please describe):

Further comments (optional)

[ch4r10t33r]

LGTM. Have we addressed the issue that Tom raised in the TG group (regarding test executor for v6 and v7)?