Ran cargo fmt, clippy fixes, suppressed some warns

I will start working on stack traces tonight and tomorrow.

We need to be able to 'unwind' by finding calling functions.

kernel/src/arch/x86_64/memory/mapping.rs

@@ -16,7 +16,8 @@ static HIGHER_HALF_DIRECT_MAP_REQUEST: HhdmRequest = HhdmRequest::new();
 
 #[used]
 #[unsafe(link_section = ".requests")]
-static KERNEL_ADDRESS_REQUEST: KernelAddressRequest = KernelAddressRequest::new();
+static KERNEL_ADDRESS_REQUEST: KernelAddressRequest =
+    KernelAddressRequest::new();
 
 /// ```rs
 /// let virt_addr = phys_addr + offset;