refactor mega-commit.

- reorganised the entire project so that the entire kernel is a single codebase rather than a kernel and a libk.

kernel/src/std/application/frame.rs

@@ -0,0 +1,37 @@
+use super::{render::RenderError, window::Window};
+use crate::arch::x86_64::drivers::framebuffer::colour::Colour;
+use crate::std::maths::geometry::Vec2;
+use alloc::{vec, vec::Vec};
+
+pub struct Frame<'f> {
+    data: Vec<Vec<Colour>>,
+    window: &'f Window,
+}
+
+impl<'a> Frame<'a> {
+    pub fn new(window: &'a Window) -> Self {
+        Self {
+            data: vec![vec![Colour::Black; window.dimensions().x()]; window.dimensions().y()],
+            window,
+        }
+    }
+
+    pub fn render(&self) -> Result<(), RenderError> {
+        let data: Vec<&[Colour]> = self.data.iter().map(|v| v.as_slice()).collect::<Vec<_>>();
+        self.window
+            .render(data.as_slice())
+            .map_err(|_| RenderError::Generic)
+    }
+
+    pub fn write_pixel(&mut self, x: usize, y: usize, color: Colour) -> Result<(), RenderError> {
+        if x >= self.window.dimensions().x() || y >= self.window.dimensions().y() {
+            return Err(RenderError::Generic);
+        }
+        self.data[y][x] = color;
+        Ok(())
+    }
+
+    pub const fn dimensions(&self) -> Vec2<usize> {
+        self.window.dimensions()
+    }
+}