chore: add build run command

.gitignore

@@ -2,4 +2,5 @@ zig-out/
 zig-cache/
 
 **/*.s
-**/*.asm
+**/*.asm
+**/*.bin

.gitmodules

@@ -1,3 +1,4 @@
+
 [submodule "lib/ZigGBA"]
 	path = lib/ZigGBA
-	url = https://github.com/wendigojaeger/ZigGBA
+	url = https://github.com/paoda/ZigGBA

build.zig

@@ -4,5 +4,10 @@ const GBABuilder = @import("lib/ZigGBA/GBA/builder.zig");
 pub fn build(b: *std.build.Builder) void {
     const exe = GBABuilder.addGBAExecutable(b, "first", "src/first.zig");
     exe.emit_asm = if (b.option(bool, "asm", "emit assembly") orelse false) .emit else .default;
-    _ = exe;
+
+    const run_cmd = b.addSystemCommand(&.{"zba"});
+    if (b.args) |args| run_cmd.addArgs(args);
+
+    const run_step = b.step("run", "Run test ROM in ZBA");
+    run_step.dependOn(&run_cmd.step);
 }