split adress iput field

Related Issue

So far there was no unified format for the address input field
So far there were no specific error messages for guests if input fields were empty and they tried to check in

I split the address and name field in multiple fields so that the data send to the database has a unified format
Before sending the form I checked if any fields are still empty and if so specific error messages were displayed
I made the input fields responsive so that they are not cut of on smartphones

pleas test the frontend as I am not sure if I did everything correct when solving merge conflicts

[ ] Is the code formatted correctly?
[ ] Unnecessary comments removed?
[ ] Printout statements removed?
[ ] If you made backend changes: Did all tests pass? Do you need to adjust some tests or write new ones?
[ ] If you made frontend changes: Did you test the UI on different devices/ browsers (Firefox, Chrome, Safari, different smartphone sizes)
[ ] Is your code easy to understand or do you need to insert some comments?
[ ] Explain the issue for the reviewer and your steps to solve the issue => makes it a lot more easy for the reviewer
[ ] Label your pull request (frontend/ backend/ testing/ styling/ sql/...)
[ ] Is the open source message included at the very beginning of every source code file?
[ ] Are all imports organized, i.e. are the imports up to date and have all package imports been removed?