V2Wizard/Store: Add wizard slice

The V2 wizard's state will be managed using RTK. Adding a slice for the
wizard lays the groundwork.

src/store/index.ts

@@ -7,6 +7,7 @@ import { edgeApi } from './edgeApi';
 import { imageBuilderApi } from './enhancedImageBuilderApi';
 import { provisioningApi } from './provisioningApi';
 import { rhsmApi } from './rhsmApi';
+import wizardSlice from './wizardSlice';
 
 export const reducer = {
   [contentSourcesApi.reducerPath]: contentSourcesApi.reducer,
@@ -15,6 +16,7 @@ export const reducer = {
   [rhsmApi.reducerPath]: rhsmApi.reducer,
   [provisioningApi.reducerPath]: provisioningApi.reducer,
   notifications: notificationsReducer,
+  wizard: wizardSlice,
 };
 
 export const middleware = (getDefaultMiddleware: Function) =>

src/store/wizardSlice.ts

@@ -0,0 +1,16 @@
+import { createSlice } from '@reduxjs/toolkit';
+
+type wizardState = {};
+
+const initialState: wizardState = {};
+
+export const wizardSlice = createSlice({
+  name: 'wizard',
+  initialState,
+  reducers: {
+    initializeWizard: () => initialState,
+  },
+});
+
+export const { initializeWizard } = wizardSlice.actions;
+export default wizardSlice.reducer;