plugin chainbase: test coverage and config

[ai16z-demirix]

Is your feature request related to a problem? Please describe.

The Chainbase plugin is expected to require comprehensive test coverage to ensure reliable interaction with the Chainbase API. Without proper testing, issues such as incorrect token balance retrieval, API timeout handling, and error management are likely to surface in production. The plugin should be thoroughly tested to handle various scenarios including successful queries, API failures, and timeout conditions.

Describe the solution you'd like

A comprehensive test suite should be implemented for the plugin-chainbase package using vitest. The test coverage is expected to include:

1. Token Balance Actions:
   • Tests should be written to validate proper handling of token balance retrieval
   • Input validation should be implemented for chain IDs and addresses
   • Response formatting should be tested for various token decimal places
2. Query Execution:
   • Tests should be created to verify SQL query execution
   • Timeout scenarios should be properly handled with configurable retry attempts
   • Error cases should be tested including API failures and invalid responses
3. Mock Implementation:
   • The Chainbase API responses should be properly mocked
   • Timer functions should be mocked to test timeout scenarios
   • Environment variables should be managed within tests
4. Code Organization:
   • Tests should be structured similarly to the plugin-bootstrap package
   • Test files should be organized by feature (actions, libs)
   • Common test utilities should be shared across test files

Describe alternatives you've considered

Additional context