Add project file icon

Guidelines

• I have read the guidelines.

Is your feature request related to a problem? Please describe.

Currently project files have the same icon as the application itself. This can cause confusion if for example you have a shortcut to Tenacity and a few project files on your desktop.

Describe the solution you'd like

Here's a mockup how a very basic icon could look like:

Describe alternatives you've considered

Alternatively, a custom icon (like mpv or Photoshop) could also look nice, but is not at all necessary.

Additional context

No response

This issue is not a duplicate

• I have confirmed this issue isn't a duplicate.