Move patch 0023 to services package

[adambabik]

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Problem

We have this patch https://github.com/status-im/go-ethereum/blob/patched/1.9/_assets/patches/0023-extract-personal-sign-api.patch. It only requires two methods EcRecover and Sign which can be easily extracted from geth's internal/ package.

Implementation

Create a new service in serivces/ or extend an existing one with EcRecover and Sign. Implementation should be taken from https://github.com/status-im/go-ethereum/blob/patched/1.9/internal/ethapi/api.go.

Acceptance Criteria

1. The patch is gone but the API is available through an existing or new service.

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