[ci][osx] build libboinc with cmake in parallel for x64 and arm64.

[AenBleidd]

Run unit tests after x64 build on CI.

[Copilot]

Pull Request Overview

This PR adds support for parallel macOS builds for x64 and arm64, updates test exclusions and assertions for architecture differences, and adjusts CI scripts and CMake files accordingly.

• Introduce a GitHub Actions matrix for macOS x64/arm64 builds and run unit tests on the second build
• Adjust unit-test preprocessor guards and platform‐specific expected outputs
• Update CMake and shell scripts to locate GTest, include directories, libraries, and trigger the correct tests per architecture

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/unit-tests/lib/test_util.cpp	Modified preprocessor guard to skip Linux-specific test on Apple
tests/unit-tests/lib/test_str_util.cpp	Added architecture-specific expected outputs for precision_time_to_string
tests/unit-tests/CMakeLists.txt	Configured GTest paths and include dirs for Apple builds
tests/executeUnitTests.sh	Made module list conditional on OSTYPE
osx/ci_build_libs_cmake.sh	Switched to single-triplet builds via command-line argument
lib/CMakeLists.txt	Added synch.h and synch.cpp to Apple source and header lists
3rdParty/vcpkg_ports/configs/libs/vcpkg.json	Added "gtest" to the list of dependencies
.github/workflows/osx.yml	Implemented macOS build matrix, updated build/test steps, and artifact naming
.codecov.yml	Incremented after_n_builds counters

Comments suppressed due to low confidence (1)

tests/unit-tests/lib/test_str_util.cpp:230

• The macro __arm64__ may not be defined by all compilers; consider using a standard identifier like __aarch64__ or inject an explicit define via CMake for arm64 builds.

#ifdef __arm64__

[Copilot]

[nitpick] Relying on undefined behavior for large timestamps leads to brittle, architecture-dependent tests. It’s better to fix precision_time_to_string to handle overflows or clamp inputs so outputs are consistent across platforms.

Suggested change

	// here we have an undefined behavior that gives negative value on x64 and positive value on arm64
	#ifdef __arm64__
	EXPECT_STREQ(buf, "2361-03-21 19:15:10.2147483647");
	#else
	EXPECT_STREQ(buf, "2361-03-21 19:15:10.-2147483648");
	#endif
	// Large timestamps are clamped or handled consistently across platforms.
	EXPECT_STREQ(buf, "2361-03-21 19:15:10.9999");

[Copilot]

The test step only runs on the arm64 job. If tests should run after the x64 build, change the condition to matrix.triplet == 'x64-osx' or remove the filter to run on both.

Suggested change

	if: ${{ success() && matrix.triplet == 'arm64-osx' }}
	if: ${{ success() }}