Add interrupts and IDT and react to double, page, general prot faults

and breakpoints, add keyboard support through the keyboar interrupt, add
paging memory management and a Frame Allocator, add a generic arch
module that initializes arch-specific things, fix framebuffer and
serialconsole being accessed from multiple places, move serial to driver
since its not actually a serial console.

kernel/src/arch/x86_64/init.rs

@@ -0,0 +1,16 @@
+use crate::arch::x86_64::gdt::load_gdt_x86_64;
+use crate::arch::x86_64::interrupts::{PICS, init_idt_x86_64};
+use x86_64::instructions::interrupts;
+
+pub fn init_x86_64() {
+    load_gdt_x86_64();
+    init_idt_x86_64();
+
+    unsafe {
+        let mut pics = PICS.lock();
+        pics.initialize();
+        pics.write_masks(0xFC, 0xFF);
+    }
+
+    interrupts::enable();
+}