Neon / portal template support (#713)

TODOs:
- [x] Do restart when checkout / restore if there is a DB
- [x] List all branches (branch id, name, date)
- [x] Allow checking out versions with no DB
- [x] safeguard to never delete main branches
- [x] create app hook for neon template
- [x] weird UX with connector on configure panel
- [x] tiny neon logo in connector
- [x] deploy to vercel
- [x] build forgot password page
- [x] what about email setup
- [x] lots of imgix errors
- [x] edit file - db snapshot
- [x] DYAD_DISABLE_DB_PUSH
- [ ] update portal doc
- [x] switch preview branch to be read-only endpoint
- [x] disable supabase sys prompt if neon is enabled
- [ ] https://payloadcms.com/docs/upload/storage-adapters
- [x] need to use main branch...

Phase 2?
- [x] generate DB migrations

src/preload.ts

@@ -33,6 +33,7 @@ const validInvokeChannels = [
   "run-app",
   "stop-app",
   "restart-app",
+  "respond-to-app-input",
   "list-versions",
   "revert-version",
   "checkout-version",
@@ -55,6 +56,9 @@ const validInvokeChannels = [
   "github:connect-existing-repo",
   "github:push",
   "github:disconnect",
+  "neon:create-project",
+  "neon:get-project",
+  "neon:delete-branch",
   "vercel:save-token",
   "vercel:list-projects",
   "vercel:is-project-available",
@@ -101,6 +105,7 @@ const validInvokeChannels = [
   "check-problems",
   "restart-dyad",
   "get-templates",
+  "portal:migrate-create",
   // Test-only channels
   // These should ALWAYS be guarded with IS_TEST_BUILD in the main process.
   // We can't detect with IS_TEST_BUILD in the preload script because