Feature/721 teleport input action

[FejZa]

XRTK - Mixed Reality Toolkit Pull Request

Overview

This PR is the conclusion to my Teleport System series for v0.2. It implements the feature request described in #721 and fixes some other issues. Full Content:

• Added a "Teleport Action" configuration option to the MixedRealityTeleportSystemProfile
• Implemented another MixedRealityTeleportValidationDataProvider constraint maxHeightDistance, which allows restricting teleport distance on the y-axis
• Fixed TeleportPointerInspector, I missed removing obsolete serialized properties in my previous PRs
• Implemented support for Digital and SingleAxis input actions for TeleportPointer. Overall the teleport system now supports Digital | SingleAxis | DualAxis input actions for teleport

How To Test

• Create a Digital input action or use an existing one and map it to some controller input, then assign it as the teleport action in the teleport system profile
• Create a SingleAxis input action or use an existing one and map it to some controller input, then assign it as the teleport action in the teleport system profile
• Use the existing "Teleport Direction" input action to test and verify dual axis still works

Changes

• Implements: Update Teleport System to allow any input to begin and complete a teleport sequence #721

Submodule Changes

• SDK
• Examples

[FejZa]

Need to bump the SDK package manifest again once the release is out