Awake from proximity sensor

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**No more updates planned**

When phone's screen is off, this flow let you awake the screen for a short time when you leave your finger in front of the proximity sensor. It will only work when phone is facing upward on a leveled surface.

**tested on Nexus 5 6.0.1 M4B30Z**

Known issue:
•Screen can light up once in pocket. Tried using an orientation block to check if phone is leveled before wake but this caused the screen to turn on ~10 secs after proximity detection. Weirdly, there is an exact same block in the flow that perform the task in less than 0.1 secs. Debug log is not showing the issue.

[Changelog
V5
•Tested for M4B30Z update.
V4
•Fixed proximity checking loop by setting max value to 1cm and leaving min value empty.
V3
•Fixed issue where phone would light up in pocket once.
V2
•Orientation block's parameters changed from "immediately" to "when changed" removed the issue where screen could take up to 30 secs before awaking.
V1
•Initial release.]