Add a new keyboard module which handles the kbd_read syscall and add the

required headers and keycode constants to make it work.

include/keyboard.h

@@ -0,0 +1,137 @@
+#include <stdint.h>
+
+#define ESCAPE 0
+#define F1 1
+#define F2 2
+#define F3 3
+#define F4 4
+#define F5 5
+#define F6 6
+#define F7 7
+#define F8 8
+#define F9 9
+#define F10 10
+#define F11 11
+#define F12 12
+#define PRINT_SCREEN 13
+#define SYS_RQ 14
+#define SCROLL_LOCK 15
+#define PAUSE_BREAK 16
+#define OEM8 17
+#define KEY1 18
+#define KEY2 19
+#define KEY3 20
+#define KEY4 21
+#define KEY5 22
+#define KEY6 23
+#define KEY7 24
+#define KEY8 25
+#define KEY9 26
+#define KEY0 27
+#define OEM_MINUS 28
+#define OEM_PLUS 29
+#define BACKSPACE 30
+#define INSERT 31
+#define HOME 32
+#define PAGE_UP 33
+#define NUMPAD_LOCK 34
+#define NUMPAD_DIVIDE 35
+#define NUMPAD_MULTIPLY 36
+#define NUMPAD_SUBTRACT 37
+#define TAB 38
+#define Q 39
+#define W 40
+#define E 41
+#define R 42
+#define T 43
+#define Y 44
+#define U 45
+#define I 46
+#define O 47
+#define P 48
+#define OEM4 49
+#define OEM6 50
+#define OEM5 51
+#define OEM7 52
+#define DELETE 53
+#define END 54
+#define PAGE_DOWN 55
+#define NUMPAD7 56
+#define NUMPAD8 57
+#define NUMPAD9 58
+#define NUMPAD_ADD 59
+#define CAPS_LOCK 60
+#define A 61
+#define S 62
+#define D 63
+#define F 64
+#define G 65
+#define H 66
+#define J 67
+#define K 68
+#define L 69
+#define OEM1 70
+#define OEM3 71
+#define RETURN 72
+#define NUMPAD4 73
+#define NUMPAD5 74
+#define NUMPAD6 75
+#define L_SHIFT 76
+#define Z 77
+#define X 78
+#define C 79
+#define V 80
+#define B 81
+#define N 82
+#define M 83
+#define OEM_COMMA 84
+#define OEM_PERIOD 85
+#define OEM2 86
+#define R_SHIFT 87
+#define ARROW_UP 88
+#define NUMPAD1 89
+#define NUMPAD2 90
+#define NUMPAD3 91
+#define NUMPAD_ENTER 92
+#define L_CONTROL 93
+#define L_WIN 94
+#define L_ALT 95
+#define SPACEBAR 96
+#define R_ALT_GR 97
+#define R_WIN 98
+#define APPS 99
+#define R_CONTROL 100
+#define ARROW_LEFT 101
+#define ARROW_DOWN 102
+#define ARROW_RIGHT 103
+#define NUMPAD0 104
+#define NUMPAD_PERIOD 105
+#define OEM9 106
+#define OEM10 107
+#define OEM11 108
+#define OEM12 109
+#define OEM13 110
+#define PREV_TRACK 111
+#define NEXT_TRACK 112
+#define MUTE 113
+#define CALCULATOR 114
+#define PLAY 115
+#define STOP 116
+#define VOLUME_DOWN 117
+#define VOLUME_UP 118
+#define WWW_HOME 119
+#define POWER_ON_TEST_OK 120
+#define TOO_MANY_KEYS 121
+#define R_CONTROL2 122
+#define R_ALT2 123
+
+typedef struct __attribute__((packed)) {
+    uint8_t  state;
+    uint8_t  _pad1;
+    uint16_t key;
+    uint16_t mods;
+    uint16_t _pad2;
+    uint32_t unicode;
+} xunil_kbd_event_t;
+
+int kbd_read(void *buf, uint8_t n);