TODO list before major work

[TheCherno]

• Add ApplicationSpecification with custom working directory (to fix Sandbox not working out of the box)
• Textures in SpriteRendererComponent don't get serialized
• Merge dev into master again (because of PRs)
• Save feature (Add missing Save feature #516)
• Better circle collider visualization (Fixed visualization for circle collider #517)
• Hazelnut scene titles (Sync Hazelnut window title with active scene name #528)
• Readme/logo stuff (Change logo with respect to github appearance #519 and Restructure README.md #541)
• Fixed physics collider visualization offset (Fixed physics collider visualization offset #555)