Fix animation performance (replace continuous invalidate)

[OneXeor]

Description

All animated views call invalidate() inside onDraw(), causing continuous redrawing and high CPU usage.

Current Problem

@Override
protected void onDraw(Canvas canvas) {
    // ... drawing code
    invalidate(); // Called every frame!
}

Solution

Replace with ValueAnimator or Choreographer for proper frame-based animation.

Affected Components

• ParticlesView
• ParticleProgressBar
• PulseButton

Benefits

• Lower CPU usage
• Better battery life
• Smoother animations
• Ability to pause/resume