kernel(core/idt): create empty handlers for more CPU exceptions

runner: use UEFI rather than BIOS

kernel(keyboard): handle keyboard input asynchronously

kernel(async): implement async tasking with round robin scheduling

kernel(async): implement async tasking with round robin scheduling

cargo: update deps and fix breaking changes

kernel(core/start): Initialize physical memory mapping and kernel heap

kernel(core/heap): implement fixed_size_block heap with linked_list f…

kernel(core/memory): implement paging from kernel space

cargo: update deps

refactor(core): raplace generic_once_cell::Lazy with spin::Lazy

core(interrupts): handle timer and keyboard hardware interrupts via p…

project: create basic kernel, with simple graphics and serial driver