test/mock: add gatt_client_request_to_send_gatt_query to mock gatt_client

test/mock: add service_id and connection_id to GATT Client events

test/gatt-service: simulate hci event in mock_gatt_client

test/mock: remove printf

test/mock: extend functionality

test/gatt-service-client: ancs_client_test

test/mock: support uuid128 in mock_gatt_client, support indications

gatt-service-client/ancs-client: setup test

test/mock: extend mock_gatt_client

test/mock: enable set errors for discovery commands

test/mock: fix handle when service is empty

test/mock: fix item order in service declaration

test/mock: implement read_value_of_characteristic

test/mock: rename states

test/gatt-service-client: test connect

test/mock: handle query for services and characteristics

test/gatt-service-clien: simulate GATT_EVENT_QUERY_COMPLETE event

test/gatt-service-client: mock gatt_client, add skeleton test code for battery service client