Add "anyOfEnums" example in preparation of improving its codegen

Author: miniBill

example/anyOfEnums.yaml

@@ -0,0 +1,31 @@
+openapi: 3.0.0
+info:
+    title: Basic Router
+    version: 1.0.0
+paths:
+    "/":
+        responses:
+            200:
+                description: Ok
+                schema:
+                    "#ref": "#/components/schemas/ApiModule/$defs/MyEnums"
+components:
+    schemas:
+        Compact:
+            enum:
+                - VAR1
+                - VAR2
+                - VAR3
+        ApiModule:
+            "$defs":
+                MyEnums:
+                    anyOf:
+                        - type: string
+                          enum:
+                              - VAR1
+                        - type: string
+                          enum:
+                              - VAR2
+                        - type: string
+                          enum:
+                              - VAR3

src/TestGenScript.elm

@@ -65,6 +65,10 @@ run =
         gitHub =
             OpenApi.Config.inputFrom (OpenApi.Config.File "./example/github-spec.json")
 
+        anyOfEnums : OpenApi.Config.Input
+        anyOfEnums =
+            OpenApi.Config.inputFrom (OpenApi.Config.File "./example/anyOfEnums.yaml")
+
         config : OpenApi.Config.Config
         config =
             OpenApi.Config.init "./generated"
@@ -80,6 +84,7 @@ run =
                 |> OpenApi.Config.withInput trustmark
                 |> OpenApi.Config.withInput trustmarkTradeCheck
                 |> OpenApi.Config.withInput gitHub
+                |> OpenApi.Config.withInput anyOfEnums
     in
     Pages.Script.withoutCliOptions
         (BackendTask.doEach