feat: booking can only in between specified hours

every booking happening outside these hours will be clamped to the hours
also added few more config options + regex filters

Backend/endpoints/time-create.go

@@ -10,7 +10,6 @@ import (
 	"errors"
 	"log"
 	"net/http"
-	"time"
 )
 
 // Relevant for arduino inputs -> creates new Booking from get and put method
@@ -40,7 +39,7 @@ func createBooking(w http.ResponseWriter, r *http.Request) {
 	}
 
 	booking := (*models.Booking).FromUrlParams(nil, r.URL.Query())
-	booking.Timestamp = time.Now()
+	// booking.Timestamp = time.Now()
 	if booking.Verify() {
 		err := booking.Insert()
 		if errors.Is(models.SameBookingError{}, err) {