Add support for indoor positioning (IPS)

[ampledata]

Several SDKs (HERE, Polaris, etc) support indoor positioning (IPS). These IPS can return additional positioning data, like precise elevation, in addition to latitude and longitude. Some IPS can also return building floor estimations ("door & floor") for mapped buildings.

Adding these SDKs is typically as simple as a lift & replace of the existing Android Location Provider as integrated into client code. We'll need to extend the CoT namespace to include the addition IPS data, as well as develop a TAK client (ATAK, etc) plugin to display this new data.

Step 1 would be adding any SDK, and treating the client-side display as a TBD by some other party.