`argWithHooks` method doesn't exist
Really we ought to have this to enable arguments to have their own scopes, so they can be individually hooked.

```diff
diff --git i/graphile-build/graphile-build/src/global.ts w/graphile-build/graphile-build/src/global.ts
index cc842ea4f..b13fef5b6 100644
--- i/graphile-build/graphile-build/src/global.ts
+++ w/graphile-build/graphile-build/src/global.ts
@@ -628,6 +628,7 @@ declare global {
     interface ScopeObjectFieldsFieldArgs extends ScopeObjectFieldsField {}
     interface ContextObjectFieldsFieldArgs extends ContextObjectFieldsField {
       scope: ScopeObjectFieldsFieldArgs;
+      argWithHooks: ArgWithHooksFunction;
     }
 
     interface ScopeObjectFieldsFieldArgsArg extends ScopeObjectFieldsFieldArgs {
@@ -668,6 +669,7 @@ declare global {
     interface ContextInterfaceFieldsFieldArgs
       extends ContextInterfaceFieldsField {
       scope: ScopeInterfaceFieldsFieldArgs;
+      argWithHooks: InterfaceArgWithHooksFunction;
     }
 
     interface ScopeInterfaceFieldsFieldArgsArg
@@ -829,6 +831,26 @@ declare global {
           ) => GrafastInputFieldConfig<any, any, any, any, any>),
     ) => GrafastInputFieldConfig<any, any, any, any, any>;
 
+    // TODO: generics
+    /** @experimental */
+    type ArgWithHooksFunction = (
+      argScope: ScopeObjectFieldsFieldArgsArg,
+      spec:
+        | GrafastArgumentConfig
+        | ((context: ContextObjectFieldsFieldArgsArg) => GrafastArgumentConfig),
+    ) => GrafastArgumentConfig;
+
+    // TODO: types
+    /** @experimental */
+    type InterfaceArgWithHooksFunction = (
+      argScope: ScopeInterfaceFieldsFieldArgsArg,
+      spec:
+        | GraphQLArgumentConfig
+        | ((
+            context: ContextInterfaceFieldsFieldArgsArg,
+          ) => GraphQLArgumentConfig),
+    ) => GraphQLArgumentConfig<any, any>;
+
     // type WatchUnwatch = (triggerChange: TriggerChangeType) => void;
 
     // type SchemaListener = (newSchema: GraphQLSchema) => void;
```