Add a EIP-1559 feature flag

[katspaugh]

Overview

Currently, we have the list of EIP-1559-capable chains hardcoded.

We need to use the config service instead.

Requirements

• Add a new Feature EIP_1559_SUPPORTED in the config-service admin (both staging and prod)
• Update the types to include it.
• Refactor the frontend code to use that
• Get rid of src/config/chain-workarounds.ts

[katspaugh]

cc @fmrsabino

[fmrsabino]

Feature EIP1559 was added to both staging and production for the following networks:

Staging:

https://safe-config.staging.gnosisdev.com/api/v1/chains/1/ https://safe-config.staging.gnosisdev.com/api/v1/chains/4/

Production:

https://safe-config.gnosis.io/api/v1/chains/1/ https://safe-config.gnosis.io/api/v1/chains/4/ https://safe-config.gnosis.io/api/v1/chains/100/

[iamacook]

Thanks @fmrsabino, I'll move this to the gateway so as to add the types.

[katspaugh]

@iamacook this was meant for safe-react, please don't transfer issues at will.

[iamacook]

@katspaugh, apologies. We need not forget to add it to the types, nonetheless.

[fmrsabino]

Thanks @fmrsabino, I'll move this to the gateway so as to add the types.

@iamacook this was meant for safe-react, please don't transfer issues at will.

Just to clarify, there are no types for features on the Safe Client Gateway. No action should be required by the backend team for this

[iamacook]

@fmrsabino, we have our own gateway types. The above would need to be added to our FEATURES enum.

[rmeissner]

You can access this via the client gateway: e.g. https://safe-client.gnosis.io/v1/chains/100/