Cytosu hit object implementation

[GSculerlor]

Open it as an epic issue to track hit objects implementation

• [x] Tap note (hit circle) 295edaf27eacb260ff260b6c1766fca7db2abff6
• [x] Hold note (spinner)
• [ ] Drag note (sliders)

For now, I will focus on refactoring the whole thing and add more proper tests since current implementations are very hard to follow and some of them are a hacky way to achieve something