add raylib dependency and desktop platform driver with interactive play mode

build.zig

@@ -38,7 +38,6 @@ pub fn build(b: *std.Build) void {
         .root_source_file = b.path("src/platform/root.zig"),
     });
     platform_mod.addImport("contract", contract_mod);
-
     const frontend_mod = b.createModule(.{
         .target = target,
         .optimize = optimize,
@@ -63,6 +62,23 @@ pub fn build(b: *std.Build) void {
         .root_module = exe_mod,
     });
 
+    if (b.lazyDependency("raylib", .{
+        .target = target,
+        .optimize = optimize,
+    })) |raylib_dep| {
+        const raylib_lib = raylib_dep.artifact("raylib");
+        exe_mod.linkLibrary(raylib_lib);
+
+        const raylib_c = b.addTranslateC(.{
+            .target = target,
+            .optimize = optimize,
+            .root_source_file = raylib_dep.path("src/raylib.h"),
+        });
+        const craylib_mod = raylib_c.createModule();
+        platform_mod.addImport("c_raylib", craylib_mod);
+        exe_mod.addImport("c_raylib", craylib_mod);
+    }
+
     b.installArtifact(exe);
 
     // Test Step Configuration