Description

Add test to check when and how trackEvent function is called.
Update docs of README.md
Refactor tests to reduce repetitve code

Context

Review commit by commit.

• The first 5 commits each add a test for trackEvent called.
• The sixth commit update README adding documentation on how to add the trackEvent and getKnowledgebaseResposne functions to the flow builder plugin.
• The rest of commits is a refactor that restructures folders and files. It also uses the createFlowBuilderPluginAndGetContents function in most of the tests to reduce the code and not to repeat the creation of requests in each test.

Approach taken / Explain the design

Testing

All the PR are changes to the tests.
Add tests to check when and how the trackEvent function is used and refactor the rest of the tests.