test: major examples refactoring for docs, unit tests and e2e tests

[ahochsteger]

Description

This PR implements the possibility to create examples that support the following:

• generate documentation pages
• can be used in the playground
• generate unit test spec files
• generate end-to-end tests for Google Apps Script

Type of change

• Tests and documentation

How has this been tested?

Several new test examples have been added:

• src/examples/actions/actionAttachmentExtractText.ts
• src/examples/actions/actionExport.ts
• src/examples/actions/actionThreadRemoveLabel.ts
• src/examples/basics/simple.ts
• src/examples/features/convertToGoogle.ts
• src/examples/migrations/migrationAdvanced.ts
• src/examples/migrations/migrationMin.ts
• src/examples/regressions/issue301.ts

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing tests pass locally with my changes

[coveralls]

Pull Request Test Coverage Report for Build 8775354500

Details

• 606 of 614 (98.7%) changed or added relevant lines in 11 files are covered.
• 13 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+1.5%) to 92.74%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/lib/e2e/E2E.ts	43	51	84.31%

Files with Coverage Reduction	New Missed Lines	%
src/lib/config/v1/V1ToV2Converter.ts	1	96.03%
src/lib/processors/ThreadProcessor.ts	12	89.52%

Totals
Change from base Build 8749265336:	1.5%
Covered Lines:	8384
Relevant Lines:	8905

---

💛 - Coveralls

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
88.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[github-actions]

🎉 This PR is included in version 2.9.0 🎉

The release is available on GitHub release

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