feat: bootstrap temporserv project scaffold

Add the initial project blueprint, Go backend skeleton, frontend app shell, database schema draft, and local development/deployment files.

Makefile

@@ -0,0 +1,18 @@
+backend-run:
+	go run ./cmd/server
+
+backend-test:
+	go test ./...
+
+frontend-install:
+	npm --prefix apps/web install
+
+frontend-dev:
+	npm --prefix apps/web run dev
+
+frontend-build:
+	npm --prefix apps/web run build
+
+dev:
+	@echo "Run backend and frontend in separate terminals."
+