Adding textures capabilities

* Added Texures to the two sample cubes
* Modified mesh structure
	- mesh now contains indices and vertices
	- Vertices contain vertices and uv's (later on they will also
	contain normals)

Solution definitely not perfect and needs improvement.

BarinkEngine/graphics/VertexArray.cpp

@@ -1,25 +1,25 @@
-#include "Graphics/VertexArray.h"
-#include <glad/glad.h>
-
-void VertexArray::Create(){
-    glGenVertexArrays(1, &id);
-}
-
-void VertexArray::Bind(){
-    glBindVertexArray(id);
-}
-
-void VertexArray::Unbind(){
-    glBindVertexArray(0);
-}
-
-void VertexArray::Delete() {
-    glDeleteVertexArrays(1, &id);
-}
-
-
-void VertexArray::AttachAttribute(unsigned int index , int size, int stride  ){
-    glVertexAttribPointer(index, size, GL_FLOAT, GL_FALSE, stride, 0);
-    glEnableVertexAttribArray(0);
-}
-
+#include "Graphics/VertexArray.h"
+#include <glad/glad.h>
+
+void VertexArray::Create(){
+    glGenVertexArrays(1, &id);
+}
+
+void VertexArray::Bind(){
+    glBindVertexArray(id);
+}
+
+void VertexArray::Unbind(){
+    glBindVertexArray(0);
+}
+
+void VertexArray::Delete() {
+    glDeleteVertexArrays(1, &id);
+}
+
+
+void VertexArray::AttachAttribute(unsigned int index , int size, int stride  ){
+    glVertexAttribPointer(index, size, GL_FLOAT, GL_FALSE, stride, 0);
+    glEnableVertexAttribArray(0);
+}
+