Electra ( PectrA) doc updates

[james-prysm]

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Update the docs for all the new requests and add in steps on submitting requests via the execution engine

• Deposit
• Withdrawal ( which relates to Exit)
• Withdrawal address
• Consolidation Update main page with info on what EIPS are included and what version of Prysm users need to be on, would be helpful to link any article from EF on all client versions