AWS Bedrock agents don't work without tool description: add tool description

[kapustor]

If we take a look at the tools in any UI, other tools have descriptions. For example, Github MCP server or Filesystem server. However, our tools are lacking description:

As AWS bedrock agent requires description, currently we cannot use Bedrock with ClickHouse MCP:

2025-03-19 21:12:37 error: [handleAbortError] AI response error; aborting request: 3 validation errors detected: Value '' at 'toolConfig.tools.9.member.toolSpec.description' failed to satisfy constraint: Member must have length greater than or equal to 1; Value '' at 'toolConfig.tools.10.member.toolSpec.description' failed to satisfy constraint: Member must have length greater than or equal to 1; Value '' at 'toolConfig.tools.11.member.toolSpec.description' failed to satisfy constraint: Member must have length greater than or equal to 1
2025-03-19 21:14:17 error: [api/server/controllers/agents/client.js #sendCompletion] Unhandled error type 1 validation error detected: Value '' at 'toolConfig.tools.9.member.toolSpec.description' failed to satisfy constraint: Member must have length greater than or equal to 1
2025-03-19 21:14:17 error: [handleAbortError] AI response error; aborting request: 1 validation error detected: Value '' at 'toolConfig.tools.9.member.toolSpec.description' failed to satisfy constraint: Member must have length greater than or equal to 1

We need to add at least some description.

cc @iskakaushik