Added Mode Toggler

[VijaySamant4368]

Related Issue

#560

Description

Made the mode toggler with SVG images that changes based on the mode.

Type of PR

• [ ] Bug fix
• [x] Feature enhancement
• [ ] Documentation update
• [ ] Other (specify): _______________

Screenshots / videos (if applicable)

Uploading Screen Recording 2024-07-19 201325.mp4…

Checklist:

• [x] I have performed a self-review of my code
• [x] I have read and followed the Contribution Guidelines.
• [x] I have tested the changes thoroughly before submitting this pull request.
• [x] I have provided relevant issue numbers, screenshots, and videos after making the changes.
• [x] I have commented my code, particularly in hard-to-understand areas.

Additional context:

This pr is under GSSoC 2024. Please label it with appropriate labels.