Please make Explicit Update mode available

[qlee01]

Hi,

great library! Works great with out of the box component.

However, i am trying to integrate this into a custom pipeline, and for this need to control when SDF should be updated. I saw in code that this is already foreseen, but not fully implemented (not exposed in editor, needs internal access for command buffer name, and no garbage collection / vertex buffer disposal integrated). Would be great to have the option to explicitly call update.

[qlee01]

I guess the order of processing was not causing the issues I have, I created another issue #3 which describes the problems I am having, Changing the execution order is not helping with these issues.