Adding Arduino Code and Webpage improvements

[Severus-Matthew]

Description

Please include a summary of the change and which issue is fixed.
Please also include relevant motivation and context.
List any dependencies that are required for this change.

Fixes # (issue)

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• Any dependent changes have been merged and published in downstream modules

Reviewer: Vinit Shahdeo

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[vinitshahdeo]

@Severus-Matthew Can you please create a firebase-integration.html file and move your code there? Let's not change the home.html?

[vinitshahdeo]

Great job 👏

[vinitshahdeo]

@Severus-Matthew Why there are many empty lines? Can we please lint it properly?

[Severus-Matthew]

sure

[Severus-Matthew]

@vinitshahdeo is it fine now?

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