Tweak README, add link to releases

[Serjlee]

Motivation

Users stumbling on this repository should be able to quickly start using the tool after reading the README

Change description

• Add link to releases page
• Add header to each listed command
• Use codeblocks for CLI examples (as they highlight the parameters and are easier to copy)
• Lint README with markdownlint

Additional Notes

Reviewer checklist

• PR address a single concern.
• PR title and description are properly filled.
• Changes will be merged in main.
• Changes are covered by tests.
• Logging is meaningful in case of troubleshooting.
• History is clean, commit messages are meaningful (see CONTRIBUTING.md) and are well formatted.

[rsora]

I added a couple of cosmetic suggestion and a couple of pointers to the Arduino documentation. The rest is excellent!

[Serjlee]

Thanks for the suggestions guys!