added Youtube-Clone under React-JS-Projects/Intermediate

[Sourabh782]

Closes: #751

• Title : Youtube-Clone
• Name: : Sourabh Singh Rawat
• Idenitfy yourself: : GSSOC Contributor

Describe the add-ons or changes you've made 📃

Added a project under React-JS-Projects/Intermediate named "Youtube-Clone". Updated React-JS-Project/README.md file, Adding my project to the list.

How Has This Been Tested? ⚙️

The code has been tested under various conditions :

1. WebBrowser view
2. Mobile View
3. slow net case

Screenshots 📷

-> mobile view:

-> Browser view ( laptop, computers, etc ) :

Type of change ☑️

What sort of change have you made:

• [ ] Bug fix (non-breaking change which fixes an issue)
• [X] New feature (non-breaking change which adds functionality)
• [ ] Code style update (formatting, local variables)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

Checklist: ☑️

• [X] My code follows the Contributing Guidelines & Code of Conduct of this project.
• [X] This PR does not contain plagiarized content.
• [X] I have performed a self-review of my own code.
• [X] I have commented my code, particularly wherever it was hard to understand.
• [X] My changes generate no new warnings.

Note to reviewers 📄

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[Sourabh782]

Thanks @Avdhesh-Varshney 💯