change the way static RAM variable are declared and used

(cherry picked from commit 6cdb7304c2)

build.ts

@@ -13,7 +13,6 @@ const asmFilePaths = [
   "src/consts/game.asm",
   "src/consts/keyboard.asm",
   "src/consts/map.asm",
-  "src/consts/offsets.asm",
   "src/consts/scene.asm",
   "src/consts/screen.asm",
   "src/consts/sprites.asm",
@@ -24,6 +23,7 @@ const asmFilePaths = [
   "src/lib/drawing.asm",
   "src/lib/sprite_rotation.asm",
 ];
+const reservedSpacePath = 'src/reserved_space.asm';
 
 const mapWidth = 15;
 const spriteWidth = 5;
@@ -93,6 +93,14 @@ for (const [label, path] of Object.entries(spritesPath)) {
 
 console.log(asmRawRepresentations.join("\n\n"));
 
+console.log(`
+;
+; RESERVED RAM SPACE
+;
+`);
+
+console.log(await Deno.readTextFile(reservedSpacePath))
+
 /**
  * Return an ASM representation of the given data
  *