Implement time management

[wipawel]

Add:

• timers support

• [x] HPET
• [x] APIC
• [x] PIT

• jiffies support

• [x] jiffies

• basic CPU frequency detection

• [x] CPU frequency detection (e.g. via CPUID processor brand string parsing) to get a scale for tsc (Issue: #80 )
• [ ] Ticks to nanoseconds scale based on CPU frequency
• [ ] CPU frequency calibration based on PIT
• [ ] CPU frequency calibration based on APIC Timer

• sleep functions with granularity:

• [ ] nano seconds
• [ ] micro seconds
• [x] mili seconds