Buat fungsi calculateLoadImpact(loadTimeMs) yang menghitung estimasi bounce rate berdasarkan load time.

Aturan:

• 0–1000ms: return "excellent" (bounce rate < 10%)
• 1001–3000ms: return "acceptable" (bounce rate 10-30%)
• 3001–5000ms: return "poor" (bounce rate 30-50%)

• 5000ms: return "critical" (bounce rate > 50%)

Hint

• Load time berpengaruh langsung pada bounce rate.
• Semakin lama load time, semakin tinggi kemungkinan user pergi.
• loadTime > 3000 → bounce rate tinggi. loadTime < 1000 → sangat rendah.