Add: begin shell with help command

src/kernel/shell.c

@@ -0,0 +1,24 @@
+#include "system.h"
+#include "../libc/stdio.h"
+#include "../libc/string.h"
+
+#define BUFFER_SIZE 256
+
+void shell_install()
+{
+  while (1) // Bad!!
+  {
+    char input_buffer[BUFFER_SIZE];
+    colorputs("blankos> ", 9);
+    get_input(input_buffer, BUFFER_SIZE);
+    printf("\n");
+    
+    // Childish shell
+
+    if (strcmp(input_buffer, "help") == 0)
+    {
+        printf("This is the Blank Operating System\ndesigned for fun by xamidev\n\nCommand help:\n\n\thelp - shows this message\n");
+    }
+
+  }
+}