deinit

pub fn deinit(self: *Self) void {
    _ = self.window.end(.{}) catch |err| {
        std.debug.print("window.end() returned {any}\n", .{err});
    };
    self.window.deinit();
    self.backend.deinit();
    self.allocator.destroy(self.window);
    self.allocator.destroy(self.backend);
}