feat(USB-OTG): Add support for USB-OTG RX/TX

[radimkarnis]

• Adds the USB-OTG TX/RX transport layer support (ESP32-S2/S3/P4)
• Related esp-stub-lib PR: feat(USB-OTG): Add USB-OTG CDC RX/TX support esp-stub-lib#41

[github-actions]

	Messages
📖	🎉 Good Job! All checks are passing!

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

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[Copilot]

Pull request overview

This PR adds USB-OTG transport layer support for ESP32-S2/S3/P4 chips, enabling data transmission and reception through the USB-OTG interface as an alternative to UART and USB Serial JTAG.

• Adds USB-OTG initialization with interrupt handling for RX/TX operations
• Updates transport initialization to prioritize USB-OTG when active
• Updates esp-stub-lib submodule to include USB-OTG API support

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/transport.c	Adds USB-OTG transport initialization with priority over USB Serial JTAG
esp-stub-lib	Updates submodule reference to version with USB-OTG support

[dobairoland]

LGTM

[Dzarda7]

LGTM, thanks.