feat(abstract-eth): add ERC20Votes delegateBySig EIP-712 helpers #2339

Job	Run time
Generate merge base API spec	6m 59s
Generate head API spec	6m 59s
Check specs identical	7s
API Spec Check	3s
Generate vacuum reports for API spec	0s
Check breaking changes	0s
Linter Override	0s
	14m 8s

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