Setup load tests with K6.io

Merge Request

💣 Breaking Changes

🥅 Description

• setup of k6.io for load testing
• load test implemented for timeseries add payload and import csv
• script to run load tests

📷 Screenshot

📓 Checklist

• The code compiles without any warnings.
• I followed the code review checklist.
• The documentation has been added/updated.

🔗 Related Issues

• Related #291 (closed)
• Closes #291 (closed)

Closes #291 (closed)