title: Create simple gui for changing json variables
body: <p>i have no real programming experience and while i hope you can help me with very simple tutorials / solutions i am also willing to learn something.</p>
  
  <p>I want to create a gui that helps the user change settings of an JSON file (in this case) without the need to edit it directly. In detail it should do:</p>
  
  <ul>
  <li>edit predefined variables</li>
  <li>show, add, remove lines at parts of the file and edit their variables</li>
  <li>simple user input (little text / numbers) / choose from a dropdown</li>
  <li>if possible little questionmark-icon for each variable that will show explanations as a hover box</li>
  <li>save changes + start an exe</li>
  </ul>
  
  <p>would be great if there already is a editable script/solution with this features
  i also found that Qt Designer is recommend very often - do you know tutorials can help me with the things i want to do?</p>
  
  <p>thank you</p>