- added a new API for switching between terminal and application mode

- removed unneeded imports to reduce the dumb amount of warnings from the compiler
- added a bounds check in frame.rs to avoid a panic when a frame tries to render a character out of bounds, instead returning an error

src/system/kernel/interrupts.rs

@@ -1,6 +1,6 @@
 
 use x86_64::structures::idt::{InterruptDescriptorTable, InterruptStackFrame};
-use crate::{print, println};
+use crate::println;
 use super::gdt;
 use lazy_static::lazy_static;
 use spin;
@@ -28,7 +28,7 @@ extern "x86-interrupt" fn timer_interrupt_handler(_stack_frame: InterruptStackFr
 
 extern "x86-interrupt" fn keyboard_interrupt_handler(_stack_frame: InterruptStackFrame) {
 
-	use pc_keyboard::{layouts, DecodedKey, HandleControl, Keyboard, ScancodeSet1};
+	use pc_keyboard::{layouts, HandleControl, Keyboard, ScancodeSet1};
 	use spin::Mutex;
 	use x86_64::instructions::port::Port;
 
@@ -38,7 +38,7 @@ extern "x86-interrupt" fn keyboard_interrupt_handler(_stack_frame: InterruptStac
 		};
 	}
 
-	let mut keyboard = KEYBOARD.lock();
+	let keyboard = KEYBOARD.lock();
 	let mut port = Port::new(0x60);
 	let scancode: u8 = unsafe { port.read() };