feat: initial data factory test components

[stijnmoreels]

Adds the initial test components for testing Azure DataFactory in integration tests.

• TemporaryDataFlowDebugSession that can be re-used across tests.
• RunDataFlowAsync on the session to run the DataFlow
  • Parse the result as CSV
  • Parse the result as JSON
• Mention that we do not specifically provide any additional help with running/waiting for pipelines, as Arcus.Testing.Core already provides enough help.

Relates to #90

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[arcus-automation]

🧪 Code coverage summary

Metric	Value
Line coverage	🟢 90.7%
Branch coverage	🔴 79.8%

😟 Your code coverage is not fully reaching 80 % yet.
Please inspect the report to find possible improvements and before you know it, your code coverage will reach the stars! 🚀

[ClementVaillantCodit]

That's an impressive piece of work, very well done @stijnmoreels!