Attempting to update to 1.17.

Todo: refactor rendering to avoid using direct GL calls, instead I've
read that you could use a `BufferBuilder` but need to do more looking
into that.
Also need to update some block entity things, since some calls are also
gone.

src/main/java/dan200/computercraft/client/gui/GuiDiskDrive.java

@@ -36,7 +36,7 @@ public class GuiDiskDrive extends HandledScreen<ContainerDiskDrive>
     @Override
     protected void drawBackground( @Nonnull MatrixStack transform, float partialTicks, int mouseX, int mouseY )
     {
-        RenderSystem.color4f( 1.0F, 1.0F, 1.0F, 1.0F );
+        RenderSystem.clearColor( 1.0F, 1.0F, 1.0F, 1.0F );
         client.getTextureManager()
             .bindTexture( BACKGROUND );
         drawTexture( transform, x, y, 0, 0, backgroundWidth, backgroundHeight );