Swap out zglfw for custom bindings in castle

src/AppContext.zig

@@ -6,8 +6,8 @@
 const AppContext = @This();
 const std = @import("std");
 
+const glfw = @import("glfw");
 const media = @import("media");
-const glfw = @import("zglfw");
 
 const Atoms = @import("engine/Atoms.zig");
 const Fonts = @import("engine/Fonts.zig");