ERC-5189 updates (#4)

* Update eip-5189.md

Some cleanups

* 5189 lint fixes

* EIP 5189 validations

* EIP-5189 Preample order

* EIP-5189 Additional dependencies

* EIP-5189 Add fee token

* Add endorser calldata

* EIP-5189 in draft

* EIP-5189 Author update

* Add missing reference block dep

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Co-authored-by: Philippe Castonguay <ph.castonguay@gmail.com>