Add clickhouse timeout

[YaroShkvorets]

This pull request introduces a configurable timeout for ClickHouse HTTP requests to prevent indefinitely hung queries, particularly addressing issues when running under Bun. It also updates the documentation and configuration files to support this new setting. Additionally, there are various formatting improvements and minor test refactors for better readability and maintainability.

ClickHouse request timeout improvements:

• Added a new environment variable CLICKHOUSE_REQUEST_TIMEOUT_MS (default: 30,000ms) to control the timeout for ClickHouse HTTP requests, with documentation explaining its importance and usage. [1] [2] [3]
• Updated ClickHouse client creation in lib/clickhouse.ts to use the new timeout value for all client instances. [1] [2] [3]
• Implemented timeout logic in the query function to abort requests that exceed the configured timeout, ensuring resources are cleaned up and errors are tracked appropriately. [1] [2] [3]

Documentation:

• Updated docs/CONFIGURATION.md to document the new CLICKHOUSE_REQUEST_TIMEOUT_MS environment variable, its default value, and guidance for users.

Test and formatting improvements:

• Reformatted and improved readability of test data and mock responses in Polymarket service tests, including breaking up long lines and consistently formatting objects and arrays. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12]
• Minor formatting fix in lib/logger.ts for improved code style consistency.