Add street names as street signs at intersections

[IAmStoxe]

Add an option to include street names as street signs at intersections in the application.

• HTML Changes:

  • Add a new checkbox option labeled "Add Street Names" to the settings modal in gui-src/index.html.

• JavaScript Changes:

  • Add an event listener for the "Add Street Names" checkbox in gui-src/js/main.js.
  • Modify the startGeneration function to pass the "Add Street Names" option to the backend.

• Rust Changes:

  • Add a new argument add_street_names to the Args struct in src/args.rs.
  • Update the run method to handle the new add_street_names argument.
  • Add a new function generate_street_signs in src/element_processing/street_signs.rs to handle adding street names as street signs.
  • Modify the generate_highways function in src/element_processing/highways.rs to call generate_street_signs if the add_street_names option is enabled.
  • Add a new module street_signs in src/element_processing/mod.rs.
  • Modify the gui_start_generation function in src/main.rs to accept the new add_street_names argument.

[benjamin051000]

What's the difference between this and #109 ?