[UI - SetMediaClockTimer] - Progress Bar Seek Feature

Proposal: <a rel="noreferrer nofollow" target="_blank" href="https://github.com/smartdevicelink/sdl_evolution/blob/master/proposals/0084-Progress-Bar-Seek-Feature.md">0084-Progress-Bar-Seek-Feature
Parent requirement: N/A
Technical task: <a rel="noreferrer nofollow" target="_blank" href="https://github.com/smartdevicelink/sdl_core/issues/">issues/

SetMediaClockTimer (`<enableSeek>`), OnSeekMediaClockTimer

As a user I want to be able to rewind and fast-forward throughout a song or podcast by dragging cursor on the progress bar on HMI.

There is a new parameter enableSeek for SetMediaClockTimer in the Mobile and HMI APIs that allows the Seek feature to exist.
There is a new notification named OnSeekMediaClockTimer in the Mobile API and HMI APIs that will send the new start time to the app.

N/A