~/.config/dwm: Use rofi as an optional more advanced launcher

.config/dwm/config.h

/* commands */
static char dmenumon[2] = "0"; /* component of dmenucmd, manipulated in spawn() */
static const char *dmenucmd[] = { "dmenu_run", "-m", dmenumon, "-fn", dmenufont, "-nb", col_gray1, "-nf", col_gray3, "-sb", col_cyan, "-sf", col_gray4, NULL };
static const char *roficmd[] = { "rofi", "-show", "run", NULL };
static const char *termcmd[]  = { "/usr/bin/sakura", "--title", "terminal", NULL };
static const char *fullscreenbrowsercmd[] = { "toggle-fullscreen.sh", NULL };
static Key keys[] = {
	/* modifier                     key        function        argument */
	{ MODKEY,                       XK_p,      spawn,          {.v = dmenucmd } },
	{ MODKEY|ShiftMask,             XK_p,      spawn,          {.v = roficmd } },
	{ MODKEY|ShiftMask,             XK_Return, spawn,          {.v = termcmd } },
	{ MODKEY,                       XK_b,      togglebar,      {0} },
	{ MODKEY,                       XK_j,      focusstack,     {.i = +1 } },