✨ feat: Add auth flow (#146)

This adds a simple way to incorporate a centralized authentication flow.

The idea is to have the user, API and SSH (for machine authentication)
all in one place using `openauthjs` + `SST`

We also have a database now :)

> We are using InstantDB as it allows us to authenticate a use with just
the email. Plus it is super simple simple to use _of course after the
initial fumbles trying to design the db and relationships_

sst.config.ts

@@ -5,11 +5,12 @@ export default $config({
     return {
       name: "nestri",
       removal: input?.stage === "production" ? "retain" : "remove",
-      home: "aws",
+      home: "cloudflare",
       providers: {
         cloudflare: "5.37.1",
         docker: "4.5.5",
         "@pulumi/command": "1.0.1",
+        random: "4.16.8",
       },
     };
   },