Add unit tests for cluster nodes handling #354

Job	Run time
Run static checkers	40s
macOS	52s
Installation tests	40s
Build with CMake [Release, gcc-14, cmake-3.29, sanitizer=""]	5m 57s
Build with make	4m 35s
Windows	3m 30s
Build with CMake [Release, gcc-14, cmake-3.29, sanitizer="thread"]	6m 10s
Windows (MinGW64)	52s
Build with CMake [Release, gcc-14, cmake-3.29, sanitizer="undefined"]	6m 18s
Build with CMake [Release, gcc-14, cmake-3.29, sanitizer="leak"]	6m 14s
Build with CMake [Release, gcc-14, cmake-3.29, sanitizer="address"]	6m 11s
Build with CMake [Release, clang-18, cmake-3.29, sanitizer=""]	4m 43s
Build with CMake [Release, clang-18, cmake-3.29, sanitizer="thread"]	5m 4s
Build with CMake [Release, clang-18, cmake-3.29, sanitizer="undefined"]	5m 0s
Build with CMake [Release, clang-18, cmake-3.29, sanitizer="leak"]	4m 50s
Build with CMake [Release, clang-18, cmake-3.29, sanitizer="address"]	5m 1s
Build with CMake [Debug, clang-18, cmake-3.29, sanitizer=""]	4m 56s
Build with CMake [Release, gcc-7, cmake-3.13, sanitizer=""]	4m 15s
Build with CMake [Release, clang-12, cmake-3.13, sanitizer=""]	5m 34s
	1h 21m 22s

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