mv WeaverHidlWrapper WeaverHidlAdapter; refactor

Change WeaverHidlWrapper to match AuthSecretHidlAdapter and refactor:
- rename to WeaverHidlAdapter
- import the AIDL names, fully qualify HIDL names
- put the functional stuff first, and helpers/boilerplate last
- do conversion work inside the callback, not outside

Test: atest FrameworksServicesTests:com.android.server.locksettings.LockSettingsServiceTests
Test: Set PIN, enter incorrect PIN, enter correct PIN
Test: Remove AIDL HAL service and flash new image
Test: enter incorrect PIN, enter correct PIN.
Test: Set a new PIN and retest all without AIDL service
Bug: 182976659
Change-Id: I7123927f5b05b0d167dba33130f9bb8fe1daa01c