add enhance-response command

[vudayani]

This PR adds a new enhance-response command to the Spring Cli.

Context: We are working on a copilot chat agent prototype in Spring tools. As part of this, the chat agent uses the Spring Cli to enhance request, modify response and apply lsp edits.

The enhance-response command is used to modify the copilot response to ensure it's compliant with Spring Boot 3.