Sniper rifle training: Fix missing victory sound, also disable controls at the end String freeze notice: This commit will display a caption with the string "Victory!". It does NOT violate the string freeze, as this string is already present in stub.lua.

Directory for automated tests to test the engine.

Run `ctest` in the root directory of this repository to run all tests.
Run `ctest -R <test name>` to run only the test with the given name.

This requires you to have CMake.