feat: create libkos crate with core modules (syscall, alloc, rt)

crates/libkos/src/lib.rs

@@ -0,0 +1,12 @@
+#![no_std]
+
+extern crate alloc;
+
+mod arch;
+pub mod syscall;
+pub mod alloc_impl;
+mod rt;
+
+#[cfg(target_os = "none")]
+#[global_allocator]
+static ALLOCATOR: alloc_impl::KosAllocator = alloc_impl::KosAllocator::new();