feat: a lot

i did a lot of work, and i also forgot to add commits regularly. I added the controller routes to create and delete controllers, improved error handling und improved the authentification process. I'm gonna add an websocket next and then I should be hopefully done with the foundations of this project. I may also add anviewControllers route which respons with every available controller

cmd/internal/middleware/auth.go

@@ -0,0 +1,19 @@
+package middleware
+
+import (
+	"net/http"
+
+	"github.com/siestaw/laterna/server/cmd/internal/db"
+	"github.com/siestaw/laterna/server/cmd/utils"
+)
+
+func WithAdminAuth(handlerFunc http.HandlerFunc) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		token := r.Header.Get("Authorization")
+		if !db.IsAdmin(token) {
+			utils.HTTPResponseHandler(w, r, http.StatusUnauthorized, "Invalid token")
+			return 
+		}
+		handlerFunc(w, r)
+	}
+}