Add performance tests to devnet deployments

[ZeljkoBenovic]

Description

This PR adds automated performance tests on each devnet deployment.
The results of the tests will be sent to the internal Slack channel.

Changes include

• Bugfix (non-breaking change that solves an issue)
• Hotfix (change that solves an urgent issue, and requires immediate attention)
• New feature (non-breaking change that adds functionality)
• Breaking change (change that is not backwards-compatible and/or changes current functionality)

Checklist

• I have assigned this PR to myself
• I have added at least 1 reviewer
• I have added the relevant labels
• I have updated the official documentation
• I have added sufficient documentation in code

Testing

• I have tested this code with the official test suite
• I have tested this code manually

[codecov]

Codecov Report

Merging #918 (caf8973) into develop (01014e8) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #918   +/-   ##
========================================
  Coverage    52.91%   52.91%           
========================================
  Files          129      129           
  Lines        17113    17113           
========================================
  Hits          9055     9055           
  Misses        7411     7411           
  Partials       647      647           

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