Convert actions/account_notes into Typescript (#26601)

app/javascript/mastodon/actions/account_notes.ts

@@ -0,0 +1,18 @@
+import { createAppAsyncThunk } from 'mastodon/store/typed_functions';
+
+import api from '../api';
+
+export const submitAccountNote = createAppAsyncThunk(
+  'account_note/submit',
+  async (args: { id: string; value: string }, { getState }) => {
+    // TODO: replace `unknown` with `ApiRelationshipJSON` when it is merged
+    const response = await api(getState).post<unknown>(
+      `/api/v1/accounts/${args.id}/note`,
+      {
+        comment: args.value,
+      },
+    );
+
+    return { relationship: response.data };
+  },
+);