* Validate incoming GPS data and throw an error if it is incorrect, storing Null values
* Extracted GPS data processing to function in external parser; optimized IF in internal parser; removed unnecessary comments; set exact values for positive test
* Add the migration for removing existing invalid GPS data and its test; added better errors to asserts in the GPS validation test
* Install FFmpeg and ExifTool on the API unit-test environment
* Fix 'stripped.jpg', 'IncorrectGPS.jpg', and 'CorrectGPS.jpg' tests for the external parser
* Optimized data validation in the external parser, returned error by the internal parser for invalid data, updated test to expect errors and handle them
* Switched from error to log entry in case of incorrect GPS data, as error handling is not so transparent in the internal parser
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Co-authored-by: Konstantin Koval
Googol Lee