Add lazy allocation

[vinc]

No description provided.

[vinc]

Lazy alloc works for nasm binaries:

> /bin/sleep
DEBUG: page fault
DEBUG: error=CAUSED_BY_WRITE
DEBUG: CR2=0x444445440000
DEBUG: alloc addr=0x444445440000 size=1
DEBUG: alloc page Page[4KiB](0x444445440000)
DEBUG: alloc frame PhysFrame[4KiB](0x1412000)

But there are still some issues for rust binaries:

> /bin/hello
DEBUG: page fault
DEBUG: error=CAUSED_BY_WRITE
DEBUG: CR2=0x444445442000
DEBUG: alloc addr=0x444445442000 size=1
DEBUG: alloc page Page[4KiB](0x444445442000)
DEBUG: alloc frame PhysFrame[4KiB](0x1414000)
DEBUG: page fault
DEBUG: error=CAUSED_BY_WRITE
DEBUG: CR2=0x444445443000
DEBUG: alloc addr=0x444445443000 size=1
DEBUG: alloc page Page[4KiB](0x444445443000)
DEBUG: alloc frame PhysFrame[4KiB](0x1415000)
DEBUG: page fault
DEBUG: error=CAUSED_BY_WRITE
DEBUG: CR2=0x444445444000
DEBUG: alloc addr=0x444445444000 size=1
DEBUG: alloc page Page[4KiB](0x444445444000)
DEBUG: alloc frame PhysFrame[4KiB](0x1416000)
DEBUG: page fault
DEBUG: error=USER_MODE
DEBUG: CR2=0x33
DEBUG: alloc addr=0x33 size=1
DEBUG: alloc page Page[4KiB](0x0)
DEBUG: alloc frame PhysFrame[4KiB](0x1417000)
DEBUG: general protection fault
DEBUG: error=0
DEBUG: CR2=0x33
DEBUG: alloc addr=0x33 size=1
DEBUG: alloc page Page[4KiB](0x0)
DEBUG: alloc frame PhysFrame[4KiB](0x1418000)
DEBUG: Could not map Page[4KiB](0x0)