Adds a Minimum Code Matter Example

[SuGlider]

Description of Change

Adds the minimum Matter Accessory example code in order to ilustrate how simple it is to work with the new ESP32 Arduino Matter Library.

Tests scenarios

ESP32-S3 with the provided example

Related links

Related to #7432

[github-actions]

	Warnings
⚠️	Some issues found for the commit messages in this PR: the commit message "feat(matter): better commentary about the GPIO.": summary should not end with a period (full stop) the commit message "feat(matter): clearer commentary and formatting.": summary should not end with a period (full stop) 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 11 commits (simplifying branch history).
⚠️	The **target branch** for this Pull Request **must be the default branch** of the project (`master`). If you would like to add this feature to a different branch, please state this in the PR description and we will consider it.

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

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[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
ESP32S3	0	0	0.00	0.00	0	0	0.00	0.00
ESP32S2	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
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	ESP32S3		ESP32S2		ESP32C3		ESP32C6		ESP32
Example	FLASH	RAM	FLASH	RAM	FLASH	RAM	FLASH	RAM	FLASH	RAM
Matter/examples/MatterMinimum	-	-	-	-	-	-	-	-	-	-

[me-no-dev]

this is not a working example, right? Maybe add the basic callback to it only work so it can change the led builtin (no preferences, etc.)

[SuGlider]

this is not a working example, right? Maybe add the basic callback to it only work so it can change the led builtin (no preferences, etc.)

Done, tested and working.

[SuGlider]

Commentaries were updated to reflect code change (adding a GPIO that can be controlled by the Matter Smartphone APP).