* Add C++ header for cpp-pistache-server to fix breaking CMake build of generated code.
* Sort includes of system C++ headers for cpp-pistache-server.
* Add samples generated from fixing bug #19683.
- Handling `std::set` in cpp-restdsk
- Member variables using `std:set` added to `Pet` in cpp-restsdk 3.0 Petstore sample
[cpp-pistache-server] taking into account a remark on this issue about cpp-pistache-server and its set management
- Switching `std::vector` to `std::set` for openapi set type in cpp-pistache-server
* overhaul pistache templates
* fix function signature in model-source
return type now aligns with definition in model-header
* use default keyword for destructors
* generate pistache samples
* move bin/configs/other/cpp-pistache-server-cpp-pistache.yaml to bin/configs/cpp-pistache-server-cpp-pistache.yaml
* Only generate validation body if necessary
* generate pistache samples
Support basic query handling
Add helpers for primitive de-serialization
Remove warnings due to unneeded commas
Deserialize basic types in queries
Add dependencies chain for external libraries
Fixes wrong parameter passed to API
