Api: Move geoip_headers_to_add from provider level to geoip filter

*Title*: *Move geoip_headers_to_add from provider level to geoip filter*

*Description*:
Currently [geoip_headers_to_add](https://www.envoyproxy.io/docs/envoy/latest/api-v3/extensions/geoip_providers/common/v3/common.proto#extensions-geoip-providers-common-v3-commongeoipproviderconfig-geolocationheaderstoadd) are configured in geoip provider. From logical standpoint it makes more sense to have them in geoip filter [config](https://www.envoyproxy.io/docs/envoy/latest/api-v3/extensions/geoip_providers/common/v3/common.proto#extensions-geoip-providers-common-v3-commongeoipproviderconfig-geolocationheaderstoadd) instead, as this is not property of provider (from which source the data is being looked up) but filter (what kind of data to get from provider).

*Relevant Links*
[Discussion](https://github.com/envoyproxy/envoy/pull/28490#discussion_r1346411286) in past PR