feat: moved libk stuff to libk folder

kernel/libk/kprint.c

@@ -0,0 +1,37 @@
+//
+// Created by rick on 28-01-21.
+//
+
+#include "kprint.h"
+
+#define MAX_HANDLERS 8
+
+kprint_handler handlers[MAX_HANDLERS] = {
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+};
+
+void kprint_register(kprint_handler handler) {
+    for (int i = 0; i < MAX_HANDLERS; ++i) {
+        if (handlers[i] == NULL) {
+            handlers[i] = handler;
+            break;
+        }
+    }
+    // todo handle
+}
+
+void kprint(const char *msg) {
+    for (int i = 0; i < MAX_HANDLERS; ++i) {
+        if (handlers[i] == NULL) {
+            continue;
+        }
+        handlers[i](msg);
+    }
+}