Separated graphics into its own file

src/main.zig

@@ -1,8 +1,21 @@
 const std = @import("std");
+const sdl = @import("sdl.zig");
 const Game = @import("game.zig");
 
-pub fn main() !void {
+pub fn run_game() !void {
     var game = try Game.init();
     defer game.deinit();
     try game.run();
 }
+
+pub fn main() !void {
+    run_game() catch |err| {
+        switch (err) {
+            error.SdlError => {
+                std.debug.print("SDL Error:\n---\n{s}\n---\n", .{sdl.SDL_GetError()});
+            },
+            else => unreachable,
+        }
+        return err;
+    };
+}