Add comparison with PubSec-Info-Assistant in other_samples.md

[DuboisABB]

This issue is for a: (mark with an x)

- [ ] bug report -> please search issues before submitting
- [ ] feature request
- [X ] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

Expected/desired behavior

In the doc other_samples.md, could you please add a comparison with PubSec-Info-Assistant ? https://github.com/microsoft/PubSec-Info-Assistant This was promoted to me by a Microsoft client executive (using polished power points). I'm not sure why Microsoft is maintaining 3 very seemingly similar demos for a RAG app.