GPS/location tracking article for the knowledge base

[dngray]

Discussed in https://github.com/privacyguides/privacyguides.org/discussions/1305

^{Originally posted by blacklight447 May 23, 2022}
Given the amount of common misconceptions around to concept of GPS based location tracking, I think it might be a good idea to add a basic explanation of how GPS works to the knowledgebase, maybe even together with an overview of other ways your location can be traced (e.g. cell tower trianglulation), and how they compare.