Add FSPG GA location capability API with geo backup and restore support (Azure#14725)

* Add FSPG GA location capability API with geo backup and restore support

* Renamed supportedIOPS to supportedIops and zoneRedundantHAandGeoBackupSupported to zoneRedundantHAAndGeoBackupSupported

* Change availabilityZone to create and read, change standbyAvailabilityZone to create, update, read

* Changed the camel case of zoneRedundantHaSupported and zoneRedundantHaAndGeoBackupSupported

* Fix LintDiff bug

Author: xunsun-commits