Add McpActionBuilder class

[guidorc]

Summary

Implements McpActionBuilder, which converts MCP tool's inputSchema into a structured ObjectGene action gene. This replaces the previous placeholder that created an empty ObjectGene("input", emptyList()) for every tool, so MCP tool-call actions now expose their real, typed arguments to the search.

The builder reuses existing RestActionBuilderV3 by first converting the tool's JSON Schema into OpenAPI Schema Objects.

Changes

• JsonSchemaToOpenApiConverter: converts an MCP tool's JSON Schema (2020-12 dialect, the MCP default) into a flat map of OpenAPI 3.1 Schema Objects.
• new overload for RestActionBuilderV3.createGeneForDTOs: a JsonNode entry point that builds a gene from a set of related schemas.
• McpActionBuilder: builds one McpToolCallAction per tool, registers it in the action cluster, and accumulates warnings for unsupported schema constructs.
• McpSampler.discoverTools(): now delegates to McpActionBuilder.addActionsFromToolList(...) instead of the placeholder loop; logs any conversion warnings. Also tracks each tool's declared outputSchema.
• McpBlackBoxFitness: replaces the hand-rolled gene→map walker (geneToMap/extractGeneValue) with getValueAsPrintableString(JSON) + a single Jackson parse to build the tools/call arguments object.
• McpDTOs: adds outputSchema to McpToolDefinition, and adds McpProtocolError (mirroring the JSON-RPC 2.0 error object) plus protocolError fields on tool/resource results.