Split ragger ethereum client into multiple smaller files

tests/ragger/ethereum_client/eip712.py

@@ -0,0 +1,11 @@
+from enum import IntEnum, auto
+
+class   EIP712FieldType(IntEnum):
+    CUSTOM = 0,
+    INT = auto()
+    UINT = auto()
+    ADDRESS = auto()
+    BOOL = auto()
+    STRING = auto()
+    FIX_BYTES = auto()
+    DYN_BYTES = auto()