ObjectNavSegment control result should be mirrored when using front facing camera

[yijunwu]

Description
Currently, in ObjectNavSegment, when using front facing camera of the phone, the vehicle's target control is incorrect. When the object is at the vehicle's left front, it turns to right, and vice versa. Currently, in order for the bot to do object nav correctly, one has to put the phone upside down, but consequently the controling UI is upside down too, which is inconvienient to use.

To Reproduce
Steps to reproduce the behavior:

1. With current release 0.7.1, let the phone screen facing to vehicle's front, and switch to front facing camera
2. Go to Object Tracking segment
3. Try object tracking
4. See error - control should be mirrored

Expected behavior
When the phone screen facing to vehicle's front, and using front facing camera, control target should be correct so that the bot can follow detected object.

Smartphone:

• Device: some main stream phones, Samsung S20FE & Samsung A40S tested
• OS: Android 10 & Android 13 tested
• Version 0.7.1, master

Suggested fix
Fix should be easy, I'll create a pull request soon

[yijunwu]

I've created a pull request (386) to fix this issue. I've tested the fix and it works.