Added ETH Holesky and Matic Amoy networks

[a0ngo]

Description

Added Holesky and Amoy testnet networks.
In addition fixed issue where the relay would send information to the utility relating to floating point data which due to rounding issues resulted in failed transactions

Pinpointed Tests

Please describe the specific tests done for the bug you fixed?
Ensure transactions didn't fail consistently

Did you replicate the issue and verify it is no longer occuring? Yes

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• New and existing unit tests pass locally with my changes
• I have verified that the project builds (using yarn build)
• E2E Tests finish successfully for all relevant assets