feat: initial backend scaffolding

migrating away from convex

Co-authored-by: Ona <no-reply@ona.com>

apps/backend/cmd/migration/main.go

@@ -0,0 +1,13 @@
+package main
+
+import (
+	"log"
+
+	"github.com/get-drexa/drexa/internal/database"
+)
+
+func main() {
+	if err := database.RunMigrations(); err != nil {
+		log.Fatalf("Failed to run migrations: %v", err)
+	}
+}