examples: glyphs: improve code structure / naming / init logic

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>

examples/glyphs/main.zig

@@ -3,17 +3,14 @@
 // Experimental ECS app example. Not yet ready for actual use.
 const mach = @import("mach");
 
-const Game = @import("Game.zig");
-const Text = @import("Text.zig");
-
 // The list of modules to be used in our application. Our game itself is implemented in our own
 // module called Game.
 pub const modules = .{
     mach.Engine,
     mach.gfx.Sprite,
     mach.gfx.SpritePipeline,
-    Text,
-    Game,
+    @import("Glyphs.zig"),
+    @import("Game.zig"),
 };
 
 pub const App = mach.App;