- added a new libary libm containing procedural macros for the kernel.

these should be used to include external files and resources in the kernel binary
  at compile time.
  - libm currently supports loading psf-1 formatted fonts
- added two fonts that are included in the binary at compile time
- refactored libk to make the crate structure more organised and maintainable in future.
  new structure:
    - drivers   (hardware interaction)
    - resources (consts and statics included either manually or via macros)
    - std       (standard functions for higher level interaction with the os, for example creating windows)
- added geometry.rs
  - provides the Vec2<T> struct for use with dimensions, coordinates etc.
- added window.rs
  - provides the Window struct for rendering the state of an application to the screen
- added application.rs
  - provides the Application trait for custom programs to implement in order to run

libk/src/resources/font/mod.rs

@@ -0,0 +1,12 @@
+use libm::include_font;
+
+pub mod ibm_vga_8x16;
+
+pub static FONT_SPLEEN_8X16: Font = Font(include_font!(
+    "/home/zxq5/Projects/OSDev/FoundryOS/libk/resources/font/spleen-8x16.psf"
+));
+pub static FONT_CP850_8X16: Font = Font(include_font!(
+    "/home/zxq5/Projects/OSDev/FoundryOS/libk/resources/font/cp850-8x16.psf"
+));
+
+pub struct Font(pub [[u8; 16]; 512]);