Adds ESP32-BOX-3

[SuGlider]

Description of Change

Adds the ESP-BOX-3 board. It is different from ESP-BOX by a few things:

• It has no Accelerometer
• GPIO47 is the Backlight, while BOX uses GPIO45
• GPIO45 is the I2S LCLK, while BOX uses GPIO47
• 2 options for Display + Touch Screen => ILI9341+GT911 or ST7789+TT21100
• BOX3 has SD_MMC + SD Card Slot

Tests scenarios

Related links

Closes #8978

[github-actions]

	Warnings
⚠️	Some issues found for the commit messages in this PR: the commit message "Adds Box3 to boards.txt": summary looks empty type/action looks empty the commit message "Adds SD pins and LCD definitions": summary looks empty type/action looks empty the commit message "ESP-Box-3 pins_arduino.h": summary looks empty type/action looks empty the commit message "Fix Variant Folder": summary looks empty type/action looks empty the commit message "LCD resolution": 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 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).
⚠️	The source branch "SuGlider-patch-1" incorrect format: contains uppercase letters. This can cause troubles on case-insensitive file systems (macOS). Please rename your branch.

	Messages
📖	You might consider squashing your 5 commits (simplifying branch history).

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

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[me-no-dev]

Given that we will add a BSP as soon as the bulk of changes for 3.0.0 are done, this might be a bit premature. Saying this because the definitions in pins_arduino.h will have to change, which will cause issues if someone already started using them as they are here.

[me-no-dev]

@SuGlider will close this and leave the pending issue to remind us (not that we need a reminder for this particular board)