set device signals at the same time

[brianignacio5]

Description

This pull request refactors how device signals are set during the classic reset process to improve code clarity and maintainability. The main change is the introduction of a new method to set multiple device signals at once, replacing several individual signal-setting calls.

Refactoring and API improvements:

• Added a new setSignals method to the Transport class in src/webserial.ts that allows setting dataTerminalReady, requestToSend, and break signals together, streamlining signal control.
• Updated the ClassicReset strategy in src/reset.ts to use the new setSignals method, replacing multiple calls to individual signal setters for a more concise and readable reset sequence.

Fix #222

Testing

Manual testing using different devices like esp32 wrover kit and esp32h2 devkitM-1

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.