feat: Slash Commands (#337)

* feat: add discord interactions worker

* feat(interactions): update CI/CD and terraform to add interactions

* chore: fix lint issues

* chore: fix build & emulation

* fix(interactions): deployment + handler

* chore: remove worker-dist via gitignore

* feat: add /pickable-roles and /pick-role basis

* feat: add pick, remove, and update the general /roleypoly command

* fix: lint missing Member import

packages/worker-utils/discord.ts

@@ -0,0 +1,38 @@
+import { userAgent } from './api';
+
+export const discordAPIBase = 'https://discordapp.com/api/v9';
+
+export enum AuthType {
+  Bearer = 'Bearer',
+  Bot = 'Bot',
+}
+
+export const discordFetch = async <T>(
+  url: string,
+  auth: string,
+  authType: AuthType = AuthType.Bearer,
+  init?: RequestInit
+): Promise<T | null> => {
+  const response = await fetch(discordAPIBase + url, {
+    ...(init || {}),
+    headers: {
+      ...(init?.headers || {}),
+      authorization: `${AuthType[authType]} ${auth}`,
+      'user-agent': userAgent,
+    },
+  });
+
+  if (response.status >= 400) {
+    console.error('discordFetch failed', {
+      url,
+      authType,
+      payload: await response.text(),
+    });
+  }
+
+  if (response.ok) {
+    return (await response.json()) as T;
+  } else {
+    return null;
+  }
+};