feat(ble): Add simultaneous client and server example

[lucasssvaz]

Description of Change

This pull request introduces a new BLE Client-Server coexistence example for the ESP32, demonstrating how to run both BLE client and server functionalities on a single device. The example allows an ESP32 to advertise its own BLE service while simultaneously scanning for and connecting to other BLE servers, enabling two-way communication between devices running the same code. Additionally, a CI configuration file is added to ensure the example is built with appropriate partition settings and only on compatible hardware.

Key additions and changes:

New BLE Client-Server Example:

• Added Client_Server.ino, which implements simultaneous BLE server and client roles on the ESP32, including periodic characteristic updates, connection management, and notification handling. The example is well-documented and suitable for testing with two ESP32 boards.

Continuous Integration Configuration:

• Added ci.yml to specify the use of the huge_app partition scheme and require BLE support or NimBLE support in the build environment, ensuring compatibility and successful builds on supported hardware.

Test Scenarios

Locally with NimBLE and Bluedroid

[github-actions]

	Messages
📖	🎉 Good Job! All checks are passing!

👋 Hello lucasssvaz, we appreciate your contribution to this project!

---

📘 Please review the project's Contributions Guide for key guidelines on code, documentation, testing, and more.

---

🖊️ Please also make sure you have read and signed the Contributor License Agreement for this project.

---

Click to see more instructions ...

This automated output is generated by the PR linter DangerJS, which checks if your Pull Request meets the project's requirements and helps you fix potential issues.

DangerJS is triggered with each push event to a Pull Request and modify the contents of this comment.

Please consider the following:
- Danger mainly focuses on the PR structure and formatting and can't understand the meaning behind your code or changes.
- Danger is not a substitute for human code reviews; it's still important to request a code review from your colleagues.
- To manually retry these Danger checks, please navigate to the Actions tab and re-run last Danger workflow.

Review and merge process you can expect ...

We do welcome contributions in the form of bug reports, feature requests and pull requests.

1. An internal issue has been created for the PR, we assign it to the relevant engineer.
2. They review the PR and either approve it or ask you for changes or clarifications.
3. Once the GitHub PR is approved we do the final review, collect approvals from core owners and make sure all the automated tests are passing.
- At this point we may do some adjustments to the proposed change, or extend it by adding tests or documentation.
4. If the change is approved and passes the tests it is merged into the default branch.

Generated by 🚫 dangerJS against 8fe5f03

[github-actions]

Memory usage test (comparing PR against master branch)

The table below shows the summary of memory usage change (decrease - increase) in bytes and percentage for each target.

Memory	FLASH [bytes]		FLASH [%]		RAM [bytes]		RAM [%]
Target	DEC	INC	DEC	INC	DEC	INC	DEC	INC
ESP32C5	0	0	0.00	0.00	0	0	0.00	0.00
ESP32P4	0	0	0.00	0.00	0	0	0.00	0.00
ESP32S3	0	0	0.00	0.00	0	0	0.00	0.00
ESP32C3	0	0	0.00	0.00	0	0	0.00	0.00
ESP32C6	0	0	0.00	0.00	0	0	0.00	0.00
ESP32H2	0	0	0.00	0.00	0	0	0.00	0.00
ESP32	0	0	0.00	0.00	0	0	0.00	0.00

Click to expand the detailed deltas report [usage change in BYTES]

Target	ESP32C5		ESP32P4		ESP32S3		ESP32C3		ESP32C6		ESP32H2		ESP32
Example	FLASH	RAM	FLASH	RAM	FLASH	RAM	FLASH	RAM	FLASH	RAM	FLASH	RAM	FLASH	RAM
libraries/BLE/examples/Client_Server	-	-	-	-	-	-	-	-	-	-	-	-	-	-