Create e2e tests

[TamaraBogantseva]

Description

Develop end-to-end (E2E) tests to streamline the testing process and ensure the stability of the system. These tests will help validate complex scenarios and edge cases, such as:

• Removing automatic multiple attribute setting for inputField: Ensure the system behaves correctly when developers handle the multiple attribute themselves.
• Fixing the issue "RTCDataChannel queue is full" when sending large files: Simulate large file transfers to verify that the data channel handles them without errors.
  E2E tests will reduce manual effort, improve test coverage, and enable faster identification of potential issues.

Links / References

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Tasks / Definition of Done

• Write test cases for flottform demo
• Write test cases for the inputField multiple attribute scenario.
• Write test cases for large file transfers and the "RTCDataChannel queue is full" issue.
• Integrate E2E tests into the CI/CD pipeline to automate testing.

Further information

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