fleet/changes/issue-4585-geolocation-support

* Add support for geolocation via public IP
* Add public_ip to host table (default empty string)
* Add public_ip to host(s) API response
Add public ip to hosts & derive geolocation when rendering host (#4652) * geoip wip * return nil if ip is empty string or if ParseIP returns nil * add ui component to render geolocation if available, address PR feedback * render public ip if available * add changes file, document geoip in deployment guide * update rest-api docs 2022-03-21 16:29:52 +00:00			`* Add support for geolocation via public IP`
			`* Add public_ip to host table (default empty string)`
			`* Add public_ip to host(s) API response`