Another restructure with code updates.

Updated RectTextrue.cs, VertexInformation.cs, and IDrawable.cs to properly pass indice information.

RecrownedGTK/Graphics/Render/Shaders/default.frag

@@ -0,0 +1,10 @@
+out vec4 outputColor;
+
+in vec2 texCoord;
+in vec4 color;
+uniform sampler2D texture0;
+
+void main()
+{
+    outputColor = texture(texture0, texCoord) * color;
+}