feat: bundle data API (#460)

BEPs/BEP322.md

@@ -288,6 +288,60 @@ Response:
 }
 ```
 
+##### 4.4.1.3 Query Bundle Data
+
+This API enables MEV data analysts to query bundle information from builders. 
+It is particularly useful for MEV data providers who need to analyze market trends and create analytics dashboards. 
+For instance, to accurately measure MEV market activity, providers can use this API to display metrics such as 
+daily bundle counts and bundles per block in their analytics panels.
+
+Request:
+
+```json
+{
+  "jsonrpc": "2.0",
+  "method": "eth_bundles",
+  "params": [
+    "0x1",
+    "0x3"
+  ],
+  "id": 1
+}
+```
+
+Params:
+
+1. String - `FromBlock`, It is the hex value of a block number.
+2. String - `ToBlock`, It is either the hex value of a block number OR block tags: "latest", "pending". It should be 
+no less than `FromBlock` and less than `FromBlock+100`.
+
+Response:
+
+* Return bundles whose first-received-height(`receivedBlock`)  is within the block range [`FromBlock`, `ToBlock`].
+
+```json
+{
+  "jsonrpc": "2.0",
+  "result": [
+    {
+      "receivedBlock": "0x1",
+      "bundles": [
+        ["0x88...44b", "0x89..45b"], // tx hase list in the bundle
+        ["0x90...46b"]
+      ]
+    },
+    {
+      "receivedBlock": "0x2",
+      "bundles": [
+        ["0x23...24b", "0x39..45b"],
+        ["0x43...55a", "0x45..33a", "0x39..45b"]  //  it is possible that a same tx hash exists in different block
+      ]
+    }
+  ],
+  "id": 1
+}
+```
+
 #### 4.4.2 Validator APIs
 
 The following APIs should be implemented on the validator side or BSC clients.