Add ESP-NOW Arduino library

[P-R-O-C-H-Y]

Description of Change

This PR adds an ESP-NOW library, which can be used for easier local network communication between devices.

Tests scenarios

Tested on multiple SoCs with the ESP-NOW examples included in this PR.

Related links

[github-actions]

	Warnings
⚠️	Some issues found for the commit messages in this PR: the commit message "Add ESP NOW Serial Example": summary looks empty type/action looks empty the commit message "Add LMK back": summary looks empty type/action looks empty the commit message "Add argument to receive callback to know if a message was broadcasted": summary looks empty type/action looks empty the commit message "Add broadcast address constant": summary looks empty type/action looks empty the commit message "Add broadcast example": summary looks empty type/action looks empty the commit message "Add comment": summary looks empty type/action looks empty the commit message "Add documentation": summary looks empty type/action looks empty the commit message "Add logs": summary looks empty type/action looks empty the commit message "Add network example": summary looks empty type/action looks empty the commit message "Add skip file": summary looks empty type/action looks empty the commit message "Apply @lucasssvaz suggestions to docs": summary looks empty type/action looks empty the commit message "Apply @suglider suggestions from code review": summary looks empty type/action looks empty the commit message "Apply suggested changes": summary looks empty type/action looks empty the commit message "Change comment": summary looks empty type/action looks empty the commit message "Change comments": summary looks empty type/action looks empty the commit message "Change return value to align with other APIs": summary looks empty type/action looks empty the commit message "Fix ESP_NOW_Serial": summary looks empty type/action looks empty the commit message "Fix example": summary looks empty type/action looks empty the commit message "Fix example": summary looks empty type/action looks empty the commit message "Fix example": summary looks empty type/action looks empty the commit message "Improve broadcast master example": summary looks empty type/action looks empty the commit message "Improve example": summary looks empty type/action looks empty the commit message "Improve example": summary looks empty type/action looks empty the commit message "Improve serial example": summary looks empty type/action looks empty the commit message "Make onRecieve also optional and make constructor protected": summary looks empty type/action looks empty the commit message "Remove examples using IDF's API": summary looks empty type/action looks empty the commit message "Simplify example": summary looks empty type/action looks empty the commit message "Skip esp-now example for esp32h2": summary looks empty type/action looks empty the commit message "Update espnow.rst": summary looks empty type/action looks empty the commit message "Update examples": summary looks empty type/action looks empty the commit message "Update libraries/ESP_NOW/src/ESP32_NOW.cpp": summary looks empty type/action looks empty the commit message "Update libraries/ESP_NOW/src/ESP32_NOW.cpp": summary looks empty type/action looks empty the commit message "Update libraries/ESP_NOW/src/ESP32_NOW_Serial.cpp": summary looks empty type/action looks empty the commit message "fix examples links in docs": summary looks empty type/action looks empty the commit message "fix(esp-now): Add check if Wifi is started.": summary should not end with a period (full stop) the commit message "make onSent optional and remove underscores for virtual functions": summary looks empty type/action looks empty Please fix these commit messages - here are some basic tips: follow Conventional Commits style correct format of commit message should be: <type/action>(<scope/component>): <summary>, for example fix(esp32): Fixed startup timeout issue allowed types are: change,ci,docs,feat,fix,refactor,remove,revert,test sufficiently descriptive message summary should be between 20 to 72 characters and start with upper case letter avoid Jira references in commit messages (unavailable/irrelevant for our customers) TIP: Install pre-commit hooks and run this check when committing (uses the Conventional Precommit Linter).
⚠️	Please consider squashing your 42 commits (simplifying branch history).

	Messages
📖	This PR seems to be quite large (total lines of code: 2438), you might consider splitting it into smaller PRs

👋 Hello P-R-O-C-H-Y, we appreciate your contribution to this project!

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[lucasssvaz]

Can't communicate when using AP mode. Currently investigating.

EDIT: Figured it out. Not a problem with the Lib

[me-no-dev]

@lucasssvaz H2 can't do ESP_NOW: https://github.com/espressif/arduino-esp32/actions/runs/8383399283/job/22959040267?pr=9395#step:5:903

[SuGlider]

@P-R-O-C-H-Y - I've left a couple changes for your review.

[P-R-O-C-H-Y]

@me-no-dev, @SuGlider PR is ready, all examples tested.

[nielsnl68]

Why did nobody reacted on the fact that this setter and getter missing the prefix get and set like the other getter/setters below?

[P-R-O-C-H-Y]

I don't think it's necessary and needed to be get/set. It's pretty straightforward what it does and how to use it. Its also well documented.