Why

This PR addresses the following problem / context:

• There were duplicate functions to convert from meters to feet
• The number of digits in the rounding was hardcoded. It is now an argument in the function and defaults to 6, which is what was used previously
• util functions need to be tested

How

Implementation summary - the following was changed / added / removed:

• Removed one of the duplicate functions
• Enabled the number of digits in the round function to be set as an argument
• Started a test file for services/util.py and added tests for convert_ft_to_m and convert_m_to_ft

Notes

Any special considerations, workarounds, or follow-up work to note?

• Use bullet points here