Changed source priority for Person (#21479)

* Added gps accuracy to Person

* Corrected GPS accuracy for Person

* Added priority of sources to Person

* Fixed formatting

* Removed rounding of coordinates.

* Added test for source priority.
Changed test for rounding of coordinates.

* Improved code style

* Code style cleanup

* Code style cleanup

* Code style cleanup

* Code style cleanup

* Code style cleanup

* Lint

* Lint