CGraphStats refactoring

[PerikiyoXD]

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

Refactoring of CGraphStats was attempted in #4385 but rejected during review.

Describe the solution you'd like

Will refactor the code for better frame graph.

Describe alternatives you've considered

No response

Additional context

No response

Security Policy

• I have read and understood the Security Policy and this issue is not about a cheat or security vulnerability.

[PerikiyoXD]

Existing refactor code:

---

CClientGame::DoPulses

• Adds into-frame timing mark and defer out-of-frame timing mark
  https://gist.github.com/PerikiyoXD/8471208092aab06ed377283525ca6c7f

---

CClientGame::DoPulsePostFrame

• Prelude intent comment plus todo for later refactor

// TODO: (pxd) Refactor this function to reduce its size and complexity
// Pulse subsystems on post frame
void CClientGame::DoPulsePostFrame()

• Add defer (Not needing lambda) to register checkpoint

    TIMING_CHECKPOINT("-CClientGame::DoPulsePostFrame");