Dark & Light mode icons added

[prakhar-1005]

Related Issue

#232

Proposed Changes

• Added new icons for dark and light modes which switch according to the mode

Checklist

• Documentation of the code
• Add your name to the CONTRIBUTORS file
• Testing your code in the local machine

Screenshots

Dark Mode

Light Mode

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[github-actions]

Greetings from GS Asansol! Thanks for making the PR, our team will soon review your PR. Thanks :)

[prakhar-1005]

@jay-io can you please take a look at the pull request I made

[regdocs]

Looks awesome, thank you! We might change the dark/light icons later. Something that's more suited to the theme.