Support enum basic type in TypedData (#1382)

Author: franciszekjob

starknet_py/tests/e2e/mock/typed_data/typed_data_rev_1_enum_example.json

@@ -0,0 +1,28 @@
+{
+    "types": {
+        "StarknetDomain": [
+            { "name": "name", "type": "shortstring" },
+            { "name": "version", "type": "shortstring" },
+            { "name": "chainId", "type": "shortstring" },
+            { "name": "revision", "type": "shortstring" }
+        ],
+        "Example": [{ "name": "someEnum", "type": "enum", "contains": "MyEnum" }],
+        "MyEnum": [
+            { "name": "Variant 1", "type": "()" },
+            { "name": "Variant 2", "type": "(u128,u128*)" },
+            { "name": "Variant 3", "type": "(u128)" }
+        ]
+    },
+    "primaryType": "Example",
+    "domain": {
+        "name": "StarkNet Mail",
+        "version": "1",
+        "chainId": "1",
+        "revision": "1"
+    },
+    "message": {
+        "someEnum": {
+            "Variant 2": [2, [0, 1]]
+        }
+    }
+}