Add QEMU support for NuttX service (RDT-1034)

[fdcavalcanti]

Description

This PR improves the Nuttx service by adding support for QEMU.
It also modifies the reset functionality to support serial reset (DTR toggle), QEMU reset and ESP reset.
On a different topic, there's a smaller commit to improve logging on app binary search.

Related

None.

Testing

Tested locally running qemu applications.

---

Looking forward to any improvements.

Checklist

Before submitting a Pull Request, please ensure the following:

• 🚨 This PR does not introduce breaking changes.
• All CI checks (GH Actions) pass.
• Documentation is updated as needed.
• Tests are updated or added as necessary.
• Code is well-commented, especially in complex areas.
• Git history is clean — commits are squashed to the minimum necessary.

[hfudev]

LGTM! Thanks for the PR.

Besides, could you also update the optional dependency qemu here?

pytest-embedded/pytest-embedded-nuttx/pyproject.toml

Line 38 in 8b81166

[project.optional-dependencies]

and here with the optional qemu service?

pytest-embedded/docs/concepts/services.md

Line 20 in b4c564b

pytest-embedded-nuttx -->|optional, support test on espressif chips| pytest-embedded-serial-esp

[fdcavalcanti]

@hfudev Modifications done. Also added few changes on documentation regarding qemu.

[hfudev]

LGTM. Thank you!