Added Very Basic Liveblocks Implimentation and README Updates

app/api/liveblocks-auth/route.ts

@@ -0,0 +1,39 @@
+import { db } from '@/lib/db';
+
+import { auth, currentUser } from '@clerk/nextjs/server';
+import { Liveblocks } from '@liveblocks/node';
+import { headers } from 'next/headers';
+
+export async function POST(req: Request) {
+  const { sessionClaims } = await auth();
+  const user = await currentUser();
+  if (!sessionClaims || !user) {
+    return new Response('Not authorized', { status: 401 });
+  }
+
+  const { room } = await req.json();
+  const boardId = (await headers()).get('BoardId') as string;
+  const board = await db.board.findUnique({
+    where: {
+      id: boardId,
+      orgId: sessionClaims.org_id,
+    },
+  });
+  if (!board || board.orgId !== sessionClaims.org_id) {
+    return new Response('Not authorized', { status: 401 });
+  }
+
+  const liveblocks = new Liveblocks({
+    secret: process.env.LIVEBLOCKS_SECRET_KEY!,
+  });
+  const session = liveblocks.prepareSession(user.id, {
+    userInfo: {
+      name: user.fullName!,
+      avatar: user.imageUrl,
+    },
+  });
+  session.allow(room, session.FULL_ACCESS);
+  const { body, status } = await session.authorize();
+
+  return new Response(body, { status });
+}