Replace std::cout with ALICEVISION_LOG_* in library code

[Copilot]

std::cout was scattered throughout library code instead of being confined to main_*.cpp entry points. This enforces the convention by routing all library-side output through the logging system.

Description

std::cout should only be used in main_*.cpp files. Library code must use ALICEVISION_LOG_* macros so output respects log level filtering, goes through the centralized logging infrastructure, and doesn't pollute stdout unconditionally.

Features list

• Add createConsoleProgressDisplay(count, s1, s2, s3) overload (no std::ostream& arg) in ProgressDisplay.hpp/.cpp — defaults to stdout internally, so callers don't reference std::cout
• Remove , std::cout from all library-side createConsoleProgressDisplay calls (13 files)
• Replace direct std::cout << with ALICEVISION_LOG_{INFO,DEBUG,ERROR} in 8 library files: precisionEvaluationToGt.hpp, colorHarmonizeEngineGlobal.cpp, LaguerreBACalibration.cpp, GlobalPositioning.cpp, lightingCalibration.cpp, kvld.cpp, normalIntegration.cpp, Matrix3x4.hpp
• Remove dead pauseProcess() from colorHarmonizeEngineGlobal.cpp (never called; used std::cout/std::cin)
• Drop #include <iostream> from files where it was only needed for std::cout

Implementation remarks

The new createConsoleProgressDisplay overload centralizes the std::cout reference inside ProgressDisplay.cpp — the one legitimate non-main location for it:

// New overload — library callers no longer mention std::cout
ProgressDisplay createConsoleProgressDisplay(unsigned long expectedCount,
                                             const std::string& s1 = "\n",
                                             const std::string& s2 = "",
                                             const std::string& s3 = "");

Intentionally left unchanged:

• aliceVision/hdr/QuadProg++.cpp — third-party MIT file
• aliceVision/system/Logger.hpp — ALICEVISION_COUT macro is part of the public logger API
• aliceVision/depthMap/cuda/host/LRUCache.hpp — std::cout appears only inside a /* */ comment block
• dependencies/ — third-party code