Replace submissions with boundaries RTK query

The endpoint is /boundaries/ as of #113, so the
RTK query is updated accordingly.

src/app/src/api/boundaries.js

@@ -0,0 +1,51 @@
+import api from './api';
+import TAGS, {
+    getListTagProvider,
+    getNewItemTagInvalidator,
+    getSingleItemProvider,
+    getUpdateItemTagInvalidator,
+} from './tags';
+
+const boundaryApi = api.injectEndpoints({
+    endpoints: build => ({
+        getBoundaries: build.query({
+            query: () => ({
+                url: '/boundaries/',
+                method: 'GET',
+            }),
+            providesTags: getListTagProvider(TAGS.BOUNDARY),
+        }),
+
+        getBoundaryDetails: build.query({
+            query: id => ({
+                url: `/boundaries/${id}/`,
+                method: 'GET',
+            }),
+            providesTags: getSingleItemProvider(TAGS.BOUNDARY),
+        }),
+
+        startNewBoundary: build.mutation({
+            query: newBoundary => ({
+                url: '/boundaries/',
+                method: 'POST',
+                body: newBoundary,
+            }),
+            invalidatesTags: getNewItemTagInvalidator(TAGS.BOUNDARY),
+        }),
+
+        submitBoundary: build.mutation({
+            query: id => ({
+                url: `/boundaries/${id}/submit/`,
+                method: 'POST',
+            }),
+            invalidatesTags: getUpdateItemTagInvalidator(TAGS.BOUNDARY),
+        }),
+    }),
+});
+
+export const {
+    useGetBoundariesQuery,
+    useGetBoundaryDetailsQuery,
+    useStartNewBoundaryMutation,
+    useSubmitBoundaryMutation,
+} = boundaryApi;

src/app/src/api/tags.js

@@ -1,5 +1,5 @@
 const TAGS = {
-    SUBMISSION: 'submission',
+    BOUNDARY: 'boundary',
 
     LIST_ID: 'list',
 };