Add command line interface for remote_provisioning

Provide an ADB interface to interact with the remote_provisioning
service for diagnostic purposes. The service reports details of the IRPC
components in dumpsys and allows ADB to query the IRPC instances and
request a CSR from each of them.

Test: adb shell dumpsys remote_provisioning
Test: adb shell cmd remote_provisioning
Test: atest RemoteProvisioningShellCommandTest
Bug: 265747549
Change-Id: I593a4b599f4fc8e27d7f79d1d5f3955eabc9641d
Merged-In: I593a4b599f4fc8e27d7f79d1d5f3955eabc9641d