Improve test coverage with Vitest for LiteREST and QueryLogPlugin

[aybanda]

Purpose

This pull request aims to improve the test coverage of the StarbaseDB project by implementing tests for the LiteREST and QueryLogPlugin components. This addresses issue #71, which highlights the need for better test coverage to ensure the reliability of the codebase.

Tasks

• Implemented the fetchData method in the LiteREST class.
• Created tests for the LiteREST class to validate its functionality.
• Implemented the logQuery method in the QueryLogPlugin class.
• Created tests for the QueryLogPlugin to ensure correct logging and error handling.

Verify

1. Review the implementation of the fetchData method in the LiteREST class located in src/literest/index.ts.
2. Check the test cases in tests/literest.test.ts to ensure they cover both valid and invalid scenarios.
3. Review the implementation of the logQuery method in the QueryLogPlugin class located in plugins/query-log/index.ts.
4. Check the test cases in tests/query-log.test.ts to ensure they validate logging functionality and error handling.
5. Run the tests using pnpm test to verify that all tests pass successfully.

Before

No previous implementation of fetchData and logQuery methods.

After

/claim #71