Implement set variables for http query

[remade]

What is the motivation?

Implemented a functional set/unset variables usage for query method on HTTP connections.

Type of Change

• 📚 Examples / docs / tutorials / dependencies update
• 🔧 Bug fix (non-breaking change which fixes an issue)
• 🥂 Improvement (non-breaking change which improves an existing feature)
• 🚀 New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to change)
• 🔐 Security fix

What does this change do?

What is your testing strategy?

Is this related to any issues?

Have you read the Contributing Guidelines?

• I have read the Contributing Guidelines