feat: taken qsort from PDCLIB, Sorting drivers. Generic driver

structure. Driver ranking

kernel/libc/libc.c

@@ -30,8 +30,8 @@ int abs(int val) {
 }
 
 // next stolen form https://www.techiedelight.com/implement-itoa-function-in-c/
-// inline function to swap two numbers
-void swap(char *x, char *y) {
+// inline function to swapc two numbers
+void swapc(char *x, char *y) {
     char t = *x;
     *x = *y;
     *y = t;
@@ -40,7 +40,7 @@ void swap(char *x, char *y) {
 // function to reverse buffer[i..j]
 char *reverse(char *buffer, int i, int j) {
     while (i < j)
-        swap(&buffer[i++], &buffer[j--]);
+        swapc(&buffer[i++], &buffer[j--]);
 
     return buffer;
 }