Add MockHostapdManager class declaration

Having this mock in a shared location helps us not duplicate it across
different binaries linking libwifi-system.

Bug: 30040724
Change-Id: I5ea4c84d1af29f9eb1c1da8339b45a6c135b6920
Test: Unit tests using this class pass.
1 file changed
tree: 201c7ada31bc705d047f6beda60c356940f509f2
  1. libwifi_hal/
  2. libwifi_system/
  3. service/
  4. tests/