Adds open source tests for log and semaphore
Adds open source tests for log and semaphore

Adds CMake tests for log and semaphore, move the tests to the tests folder.

PiperOrigin-RevId: 256254527

firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk