Add parameters to `ExponentialDecayFollowMode` to bring it in line with the permissionless version of this feature

Introduces `FollowThresholds` to define movement thresholds for initiating and settling follow motion.

Parameters added:
`halfLifeMs` - The physical time required for the space to close half the remaining distance to the target.
`startDelay` - Time to wait, in milliseconds, before the follow motion begins.
`startThresholds` - The change in position required to initiate the follow motion to start.
`settleThresholds` - A small number indicating when the logic should stop calculating oscillations and simply jump to the final target number.

Bug: 553613774

Test: Tested on Moohan emulator and device.

Change-Id: I2dc5ab1d20eba49b5197cce793b2e21267ff7cf1