Add Godot to Sentry new project wizard

[bruno-garcia]

This was done by @andreiborza as part of hackweek: getsentry/sentry@814e0ee

Note the goals of the wizard:

• Discoverable
  • We have the logo already on platformicons. So just adding godot as a key should show it. The name should be Godot, obviously
• Short and simple but including key information
  • If it's overwhelming set of instructions users 'put it aside for later'. So keep instructions simply.
  • Rely on __PUBLIC_DSN__ template to show the actual project DSN
  • Dealing with debug symbols can be a lot of information, but not including any mention of it is also setting people up for failure. So include the core information and for more details, link out to the documentation which anyway gets more updates than the wizard
  • Should feel idomatic to Godot developers, but also avoid reinventing everything: Check out other wizards like Unity, Unreal, JavaScript