Revert moving LuaScript header code into separate file

Let's just say, this broke stuff.

src/src/escript.cc

@@ -218,7 +218,62 @@ static int timelimit = 3000;
 static bool do_call_on_halt = false;
 
 const char *before_code =
-#include "luascript_header.lua"
+"local EVENT_PLAYER_DIE = 0;"
+"local EVENT_ENEMY_DIE = 1;"
+"local EVENT_INTERACTIVE_DESTROY = 2;"
+"local EVENT_PLAYER_RESPAWN = 3;"
+"local EVENT_CLICK_DOWN = 4;"
+"local EVENT_CLICK_UP = 5;"
+"local EVENT_ABSORB = 6;"
+"local INPUT_KEY_DOWN = 4;"
+"local INPUT_KEY_UP = 8;"
+"local INPUT_POINTER_DOWN = 16;"
+"local INPUT_POINTER_UP = 32;"
+"local KEY_A = 4;"
+"local KEY_B = 5;"
+"local KEY_C = 6;"
+"local KEY_D = 7;"
+"local KEY_E = 8;"
+"local KEY_F = 9;"
+"local KEY_G = 10;"
+"local KEY_H = 11;"
+"local KEY_I = 12;"
+"local KEY_J = 13;"
+"local KEY_K = 14;"
+"local KEY_L = 15;"
+"local KEY_M = 16;"
+"local KEY_N = 17;"
+"local KEY_O = 18;"
+"local KEY_P = 19;"
+"local KEY_Q = 20;"
+"local KEY_R = 21;"
+"local KEY_S = 22;"
+"local KEY_T = 23;"
+"local KEY_U = 24;"
+"local KEY_V = 25;"
+"local KEY_W = 26;"
+"local KEY_X = 27;"
+"local KEY_Y = 28;"
+"local KEY_Z = 29;"
+"local KEY_1 = 30;"
+"local KEY_2 = 31;"
+"local KEY_3 = 32;"
+"local KEY_4 = 33;"
+"local KEY_5 = 34;"
+"local KEY_6 = 35;"
+"local KEY_7 = 36;"
+"local KEY_8 = 37;"
+"local KEY_9 = 38;"
+"local KEY_0 = 39;"
+"local KEY_ENTER = 40;"
+"local KEY_ESC = 41;"
+"local KEY_BACKSPACE = 42;"
+"local KEY_TAB = 43;"
+"local KEY_SPACE = 44;"
+"local KEY_RIGHT = 79;"
+"local KEY_LEFT = 80;"
+"local KEY_DOWN = 81;"
+"local KEY_UP = 82;"
 ;
 const char *after_code = "";
 const char *default_code_old =