chore: update session and challenge repo -- using Redis for caching session and challenge verifying -- added api handler docs

cmd/api/main.go

@@ -1 +1,23 @@
 package main
+
+import (
+	"backend/config"
+	"backend/internal/api/http"
+	"backend/internal/app"
+	"log"
+)
+
+func main() {
+	cfg, err := config.ReadStandard("config.yaml")
+	if err != nil {
+		log.Fatalf("Failed to load configuration: %v", err)
+	}
+
+	appContainer, err := app.NewAppContainer(cfg)
+	if err != nil {
+		log.Fatalf("Failed to initialize application: %v", err)
+	}
+	defer appContainer.Close()
+
+	http.Run(cfg.Server, appContainer)
+}