Teleport options

[provencher]

@machenmusik contributions:

• Made it possible to call the teleport input action for default teleport pointer

@provencher contributions:

• Added enum allowing for Custom teleport pointer, official teleport pointer, or no teleport pointer
• Fixed teleport cursor appearing at hand after first being instantiated
• Fixed teleport cursor updating a frame behind by moving its update to late update
• Fixed avatar prefab reference being broken by last commit

[provencher]

Generally looks good (note the local avatar reference question), hopefully I will have a chance to try later today.

I thought you might want to have your custom version of the pointer react to the dual-axis input change and then add it as another pointer for articulated hand in the MRTK-Quest input config - and then it could be used with other MRTK targets as well - but that would make it harder to toggle between behaviors, so what's here makes sense to me.

Yeah I'd like to eventually make my custom pointer work as an official pointer. However, that'll take a fair bit of work of plugging in some base things like controller pose synchronization. I'll leave it as-is for now.

[provencher]

For the whacky behavior, I'll address that in another PR. Thanks for the review.