added yt icon in Subsribe Button

[SmitKalpesh]

What does this PR do?

It adds a yt icon in the subsribe button which makes more forward and easy to understand for users
Fixes #(issue)

Type of change

UI Changed

How should this be tested?

• Test A
• Test B

Mandatory Tasks

• Make sure you have self-reviewed the code. A decent size PR without self-review might be rejected.

Checklist

• I haven't read the contributing guide
• My code doesn't follow the style guidelines of this project
• I haven't commented my code, particularly in hard-to-understand areas
• I haven't checked if my PR needs changes to the documentation
• I haven't checked if my changes generate no new warnings
• I haven't added tests that prove my fix is effective or that my feature works
• I haven't checked if new and existing unit tests pass locally with my changes

[vercel]

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