fix: compilation warning for maybe unused variables

feature: shell - autocomplete and help menu improved

headers/keyboard.h

@@ -2,7 +2,7 @@
 
 #include <stdint.h>
 
-static const char *keymap[128] = {
+[[__maybe_unused__]] static const char *keymap[128] = {
     [2] = "1!",   [3] = "2@",   [4] = "3#",  [5] = "4$",  [6] = "5%",
     [7] = "6^",   [8] = "7&",   [9] = "8*",  [10] = "9(", [11] = "0)",
     [12] = "-_",  [13] = "=+",  [16] = "qQ", [17] = "wW", [18] = "eE",

headers/shell.h

@@ -2,7 +2,7 @@
 
 #define PROMPT "> "
 
-static const char *POOP =
+[[__maybe_unused__]] static const char *POOP =
     "        /           ____/                   /       _           \\\n"
     "      _/        ___/_                      /       / \\___        \\_\n"
     "     /        _/'-,  `---._               /       /      \\_        \\\n"
@@ -43,22 +43,9 @@ static const char *POOP =
     "     \\_        \\___\"\"\"/\"\"     /                       `\"\"/\"\"  "
     "\n";
 
-typedef enum {
-	HELP,
-	REBOOT,
-	POWEROFF,
-	HALT,
-	STACK,
-	CLEAR,
-	ECHO,
-	COLOR,
-	MERDELLA,
-	DATE,
-	ERROR
-} CMD_TOK;
-
 void shell_init(void);
 void reboot(void);
 void halt(void);
 void print_stack(void);
 void date(void);
+void merdella(void);

headers/terminal.h

@@ -50,4 +50,3 @@ void terminal_clear(void);
 struct key_event terminal_getkey(void);
 void update_cursor(void);
 void move_cursor(int direction);
-struct screen *get_screen(void);