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/db/connection.go

@@ -31,7 +31,7 @@ func ConnectDB() {
 func InitDB() {
 	_, err := DB.Exec(` 
 		CREATE TABLE IF NOT EXISTS controllers (
-		id TEXT PRIMARY KEY,
+		id INTEGER PRIMARY KEY,
 		token_hash TEXT,
 		color TEXT,
 		updated_at DATETIME