azsdk_1.0.0-dev.20250703.4

MCP Prompt tools (#11066)

* Create new tools. One for validation and one to donwload prompts

* Add response classes

* Integrate new tools to be discoverable

* Generalize prompt validation to file validation

* skip files already downloaded

* Variable declared twice

* Check if working repo is same as repo we are targerting

* remove unused variable

* When in repository all is good