Som/pectra4 engine api (#239)

* Flatten 7251 req

* Replace requests with generic requests

* fix type

* change byte to uint8

* Simplify requests bundle

* Rename requests_hash and remove reqs from body

Author: somnathb1

execution/execution.proto

@@ -56,7 +56,7 @@ message Header {
   optional uint64 blob_gas_used = 19;                // added in Dencun (EIP-4844)
   optional uint64 excess_blob_gas = 20;              // added in Dencun (EIP-4844)
   optional types.H256 parent_beacon_block_root = 21; // added in Dencun (EIP-4788)
-  optional types.H256 requests_root = 22;            // added in Pectra (EIP-7685)
+  optional types.H256 requests_hash = 22;            // added in Pectra (EIP-7685)
   // AuRa
   optional uint64 aura_step  = 23;
   optional bytes aura_seal = 24;
@@ -70,7 +70,6 @@ message BlockBody {
   repeated bytes transactions = 3;
   repeated Header uncles = 4;
   repeated types.Withdrawal withdrawals = 5; // added in Shapella (EIP-4895)
-  repeated bytes requests = 6;               // added in Pectra (EIP-7685)
 }
 
 message Block {
@@ -143,6 +142,7 @@ message AssembledBlockData {
     types.ExecutionPayload execution_payload = 1;
     types.H256 block_value = 2;
     types.BlobsBundleV1 blobs_bundle = 3;
+    types.RequestsBundle requests = 4;
 }
 
 message GetAssembledBlockResponse {

types/types.proto

@@ -77,25 +77,6 @@ message ExecutionPayload {
   repeated Withdrawal withdrawals = 16;
   optional uint64 blob_gas_used = 17;
   optional uint64 excess_blob_gas = 18;
-  repeated DepositRequest deposit_requests = 19;
-  repeated WithdrawalRequest withdrawal_requests = 20;
-  repeated ConsolidationRequest consolidation_requests = 21;
-}
-
-message DepositRequest {
-  bytes pubkey = 1;
-  H256 withdrawal_credentials = 2;
-  uint64 amount = 3;
-  bytes signature = 4;
-  uint64 index = 5;
-}
-
-message WithdrawalRequest {
-  bytes request_data = 1;
-}
-
-message ConsolidationRequest {
-  bytes request_data = 1;
 }
 
 message Withdrawal {
@@ -113,6 +94,10 @@ message BlobsBundleV1 {
   repeated bytes proofs = 3;
 }
 
+message RequestsBundle {
+  repeated bytes requests = 1;
+}
+
 // End of Engine API types
 // ------------------------------------------------------------------------