Add dynamic uniform buffers

src/Mesh.zig

@@ -1,12 +1,17 @@
 const std = @import("std");
 const vk = @import("vulkan");
+const zm = @import("zmath");
+
 const Utilities = @import("utilities.zig");
 const Vertex = Utilities.Vertex;
 const Device = @import("vulkan_renderer.zig").Device;
 const Instance = @import("vulkan_renderer.zig").Instance;
+const UboModel = @import("vulkan_renderer.zig").UboModel;
 
 const Self = @This();
 
+ubo_model: UboModel,
+
 vertex_count: u32,
 vertex_buffer: vk.Buffer,
 vertex_buffer_memory: vk.DeviceMemory,
@@ -44,6 +49,8 @@ pub fn new(
     try self.createVertexBuffer(transfer_queue, transfer_command_pool, vertices);
     try self.createIndexBuffer(transfer_queue, transfer_command_pool, indices);
 
+    self.ubo_model = .{ .model = zm.identity() };
+
     return self;
 }