contexthub: add missing pieces of HubEndpointInfo

- Add getter and setter for version
- Add getter for type and requiredPermissions

Test: build
API-Coverage-Bug: 377554469
Bug: 375487784
Flag: android.chre.flags.offload_api
Change-Id: I353bcc3a9d6f3cb8cfe89273ba2c9d0307a74fcb