Get Radio Hal Capabilities in VTS

* Created utility method in v1_6 HAL to access radio hal capabilities
* Created static library to support getting the capaiblities response
* Created RadioResponseWaiter to encapsulate the notify \ wait logic
  used when waiting for an asynchronous response from the HAL
* Usage: if (getRadioHalCapabilities().modemReducedFeatureSet1) { ... }

Bug: 181895757
Test: Accessed default hal capabilities
Change-Id: Ie0a727d4e9d268ad03cf3fa793aa456a95c89f5b