Align all example CMake targets with C++17 library standard

[Copilot]

The library builds with C++17, while most examples were still forcing C++11, creating a language-standard mismatch between headers/library and example consumers. This PR removes that drift by standardizing all example CMake targets on C++17.

• Scope

  • Updated all affected examples/**/CMakeLists.txt files that still declared -std=c++11.
  • Left already-aligned paths out of scope (no churn outside impacted files).

• CMake standardization

  • Replaced hardcoded C++11 compiler flag usage with explicit CMake standard settings.
  • Kept existing optimization flags intact.

• Resulting pattern

  set(CMAKE_CXX_STANDARD 17)
  set(CMAKE_CXX_STANDARD_REQUIRED ON)
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3")

[adityakamath]

source code has been updated for scs009, see if more cmake targets need to be updated