feat: Implement engine api eth_getBlockByNumber (#478)

Author: Kayden-ML

crates/common/execution_engine/src/lib.rs

@@ -4,7 +4,7 @@ pub mod utils;
 use std::path::PathBuf;
 
 use alloy_primitives::{B64, B256, Bytes, hex};
-use alloy_rpc_types_eth::Block;
+use alloy_rpc_types_eth::{Block, BlockNumberOrTag};
 use anyhow::anyhow;
 use async_trait::async_trait;
 use jsonwebtoken::{EncodingKey, Header, encode, get_current_timestamp};
@@ -139,6 +139,28 @@ impl ExecutionEngine {
             .to_result()
     }
 
+    pub async fn eth_get_block_by_number(
+        &self,
+        block_number_or_tag: BlockNumberOrTag,
+        hydrated: bool,
+    ) -> anyhow::Result<Block> {
+        let request_body = JsonRpcRequest {
+            id: 1,
+            jsonrpc: "2.0".to_string(),
+            method: "eth_getBlockByNumber".to_string(),
+            params: vec![json!(block_number_or_tag), json!(hydrated)],
+        };
+
+        let http_post_request = self.build_request(request_body)?;
+
+        self.http_client
+            .execute(http_post_request)
+            .await?
+            .json::<JsonRpcResponse<Block>>()
+            .await?
+            .to_result()
+    }
+
     pub async fn eth_get_block_by_hash(
         &self,
         block_hash: B256,