Extract SC integration tests to a separate file

[Stefan-Ethernal]

Description

This PR extracts SC integration tests to a separate file, to be able to easier maintain the test codebase in the future. Affected tests are between unit tests and e2e tests, as they test SC integration points. Therefore decided to call them integration tests (prefix TestIntegration).

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)

Breaking changes

Please complete this section if any breaking changes have been made, otherwise delete it

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 #1203 (8b14116) into develop (cca8611) will not change coverage.
The diff coverage is n/a.

❗ Current head 8b14116 differs from pull request most recent head 7058843. Consider uploading reports for the commit 7058843 to get more accurate results

@@           Coverage Diff            @@
##           develop    #1203   +/-   ##
========================================
  Coverage    54.68%   54.68%           
========================================
  Files          176      176           
  Lines        23553    23553           
========================================
  Hits         12880    12880           
  Misses        9645     9645           
  Partials      1028     1028           

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