Initial merge changes

Added Execution Payload from Rayonism Fork

Updated new Containers to match Merge Spec

Updated BeaconBlockBody for Merge Spec

Completed updating BeaconState and BeaconBlockBody

Modified ExecutionPayload<T> to use Transaction<T>

Mostly Finished Changes for beacon-chain.md

Added some things for fork-choice.md

Update to match new fork-choice.md/fork.md changes

ran cargo fmt

Added Missing Pieces in eth2_libp2p for Merge

fix ef test

Various Changes to Conform Closer to Merge Spec

consensus/state_processing/src/per_epoch_processing.rs

@@ -35,7 +35,7 @@ pub fn process_epoch<T: EthSpec>(
 
     match state {
         BeaconState::Base(_) => base::process_epoch(state, spec),
-        BeaconState::Altair(_) => altair::process_epoch(state, spec),
+        BeaconState::Altair(_) | BeaconState::Merge(_) => altair::process_epoch(state, spec),
     }
 }