⭐ feat(infra): Migrate to serverless Lambda architecture (#291)

## Description
<!-- Briefly describe the purpose and scope of your changes -->


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **New Features**
- Introduced serverless API and authentication endpoints, improving
scalability and reliability.
- Added rate limiting to the API, providing protection against excessive
requests and returning custom error responses.

- **Improvements**
- Simplified infrastructure for both API and authentication, reducing
complexity and improving maintainability.
- Updated resource allocations for backend services to optimize
performance and cost.

- **Bug Fixes**
- Removed unused scripts and configuration, resulting in a cleaner
development environment.

- **Other**
  - Updated type declarations to reflect new infrastructure changes.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

infra/auth.ts

@@ -1,98 +1,32 @@
 import { bus } from "./bus";
+import { vpc } from "./vpc";
 import { domain } from "./dns";
 import { secret } from "./secret";
-import { cluster } from "./cluster";
 import { postgres } from "./postgres";
 
-export const authService = new sst.aws.Service("Auth", {
-    cluster,
-    cpu: $app.stage === "production" ? "1 vCPU" : undefined,
-    memory: $app.stage === "production" ? "2 GB" : undefined,
-    command: ["bun", "run", "./src/auth/index.ts"],
-    link: [
-        bus,
-        postgres,
-        secret.PolarSecret,
-        secret.GithubClientID,
-        secret.DiscordClientID,
-        secret.GithubClientSecret,
-        secret.DiscordClientSecret,
-    ],
-    image: {
-        dockerfile: "packages/functions/Containerfile",
-    },
-    environment: {
-        NO_COLOR: "1",
-        STORAGE: "/tmp/persist.json"
-    },
-    loadBalancer: {
-        rules: [
+export const auth = new sst.aws.Auth("Auth", {
+    authorizer: {
+        vpc,
+        link: [
+            bus,
+            postgres,
+            secret.PolarSecret,
+            secret.GithubClientID,
+            secret.DiscordClientID,
+            secret.GithubClientSecret,
+            secret.DiscordClientSecret,
+        ],
+        permissions: [
             {
-                listen: "80/http",
-                forward: "3002/http",
+                actions: ["ses:SendEmail"],
+                resources: ["*"],
             },
         ],
-    },
-    permissions: [
-        {
-            actions: ["ses:SendEmail"],
-            resources: ["*"],
-        },
-    ],
-    dev: {
-        command: "bun dev:auth",
-        directory: "packages/functions",
-        url: "http://localhost:3002",
-    },
-    scaling:
-        $app.stage === "production"
-            ? {
-                min: 2,
-                max: 10,
-            }
-            : undefined,
-    //For temporarily persisting the persist.json
-    transform: {
-        taskDefinition: (args) => {
-            const volumes = $output(args.volumes).apply(v => {
-                const next = [...v, {
-                    name: "shared-tmp",
-                    dockerVolumeConfiguration: {
-                        scope: "shared",
-                        driver: "local"
-                    }
-                }];
-
-                return next;
-            })
-
-            // "containerDefinitions" is a JSON string, parse first
-            let containers = $jsonParse(args.containerDefinitions);
-
-            containers = containers.apply((containerDefinitions) => {
-                containerDefinitions[0].mountPoints = [
-                    ...(containerDefinitions[0].mountPoints ?? []),
-                    {
-                        sourceVolume: "shared-tmp",
-                        containerPath: "/tmp"
-                    }
-                ]
-                return containerDefinitions;
-            });
-
-            args.volumes = volumes
-            args.containerDefinitions = $jsonStringify(containers);
-        }
-    }
-});
-
-export const auth = !$dev ? new sst.aws.Router("AuthRoute", {
-    routes: {
-        // I think auth.url should work all the same
-        "/*": authService.nodes.loadBalancer.dnsName,
+        handler: "packages/functions/src/auth/index.handler",
     },
     domain: {
         name: "auth." + domain,
         dns: sst.cloudflare.dns(),
     },
-}) : authService
+    forceUpgrade: "v2",
+});