Add basic bcc protocol scaffold

Author: jannikluhn

trinity/protocol/bcc/proto.py

@@ -0,0 +1,18 @@
+import logging
+
+from p2p.protocol import Protocol
+
+from trinity.protocol.bcc.commands import (
+    Status,
+    GetBeaconBlocks,
+    BeaconBlocks,
+    AttestationRecords,
+)
+
+
+class BCCProtocol(Protocol):
+    name = "bcc"
+    version = 0
+    _commands = [Status, GetBeaconBlocks, BeaconBlocks, AttestationRecords]
+    cmd_length = 4
+    logger = logging.getLogger("p2p.bcc.BCCProtocol")