Added Blood donation form

[Khushi-Pushkar]

Closes: #720

• Title : Blood donation form
• Name: : Khushi Pushkar
• Idenitfy yourself: : Gssoc

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

How Has This Been Tested? ⚙️

Screenshots 📷

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.
• [ ] 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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