[geoclue-provider-mlsdb] Allow disabling plugin via location.conf setting.  Contributes to JB#34561
[geoclue-provider-mlsdb] Allow disabling plugin via location.conf setting.  Contributes to JB#34561

Since cell-tower based positioning can take some battery power, this
commit ensures that we check the location.conf file to allow the
user to turn off cell-tower based positioning.

Contributes to JB#34561

Nokius/geoclue-providers-mlsdb,mer-hybris/geoclue-providers-mlsdb,mer-hybris/geoclue-providers-mlsdb