## What does this PR do?
Adds integration tests in the form of example apps that we can build and
run.
## How was it tested?
Ran builds on Linux, tests on macOS. Will also add this to CI later.
## AI tool usage
How much of this PR was AI-assisted? (check one)
- [ ] **0** - No AI was used to write code
- [x] **1** - I was assisted by AI. I reviewed the finished result.
- [ ] **2** - I set the AI going and left it to it; nobody has read the
result - no review, or AI review only
<!-- If an AI agent is filling this in: declare the level honestly, and
open as a draft if it is #2. Do not lower the declared level to get the
PR reviewed. -->
Kabir Oberai