refactor(node): Add node methods (#146)

status/statusgo_backend_new/node.nim

@@ -0,0 +1,20 @@
+import json
+import core, utils
+import response_type
+
+export response_type
+
+proc adminPeers*(): RpcResponse[JsonNode] {.raises: [Exception].} =
+    let payload = %* []
+    result = callPrivateRPC("admin_peers", payload)
+
+proc wakuV2Peers*(): RpcResponse[JsonNode] {.raises: [Exception].} =
+    let payload = %* []
+    result = callPrivateRPC("peers", payload)
+
+proc sendRPCMessageRaw*(inputJSON: string): string {.raises: [Exception].} =
+    result = callPrivateRPCRaw(inputJSON)
+
+proc getBloomFilter*(): RpcResponse[JsonNode] {.raises: [Exception].} =
+    let payload = %* []
+    result = callPrivateRPC("bloomFilter".prefix, payload)