Temperature Calculator Ready

[Avdhesh-Varshney]

Closes #51

• Attractive user interface.
• Perfect functioning.
• Quick responsive and best user experience.

[Avdhesh-Varshney]

@RuanAragao please review this pull request and requested to merge it under hacktoberfest 2023

[Avdhesh-Varshney]

@RuanAragao this is just a enhancement not a new calculator. So, index.html file is already attached to the main index.html file.

[RuanAragao]

@RuanAragao this is just a enhancement not a new calculator. So, index.html file is already attached to the main index.html file.

My apologies, it's true. Thanks for the contribution!