Support integration tests with fixed binary artifacts

[ranweiler]

We do not commit binary artifacts to version control. For integration tests that require binaries, we commit source and build in CI. However, some OneFuzz features perform binary analysis. For these features, it would be helpful to have fixed, pre-compiled binaries, so we can make assertions about e.g. the expected offsets of various items. We need such assertions to be resilient to irrelevant variance in build environment.

AB#35973