Enhance Dynamic Include Path Management in xeus-cpp with XEUS_SEARCH_PATH Support #1215

Job	Run time
build (ubu24, ubuntu-24.04, bash)	1m 22s
build (ubu24, ubuntu-24.04, bash)	1m 22s
emscripten_wasm (ubu24, ubuntu-24.04, 3.1.45, bash)	3m 34s
emscripten_wasm (ubu24, ubuntu-24.04, 3.1.45, bash)	3m 34s
build (ubu24-analyzers, ubuntu-24.04, true, -DCMAKE_BUILD_TYPE=Debug, bash)	2m 17s
build (ubu24-analyzers, ubuntu-24.04, true, -DCMAKE_BUILD_TYPE=Debug, bash)	2m 24s
emscripten_wasm (osx13-x86, macos-13, 3.1.45, bash)	7m 2s
emscripten_wasm (osx13-x86, macos-13, 3.1.45, bash)	7m 2s
build (osx13-x86, macos-13, bash)	4m 31s
build (osx13-x86, macos-13, bash)	4m 31s
emscripten_wasm (osx14-arm, macos-14, 3.1.45, bash)	3m 33s
emscripten_wasm (osx14-arm, macos-14, 3.1.45, bash)	3m 33s
build (osx14-arm, macos-14, bash)	1m 17s
build (osx14-arm, macos-14, bash)	1m 17s
emscripten_wasm (osx15-arm, macos-15, 3.1.45, bash)	3m 27s
emscripten_wasm (osx15-arm, macos-15, 3.1.45, bash)	3m 27s
build (osx15-arm, macos-15, bash)	1m 59s
build (osx15-arm, macos-15, bash)	1m 59s
build (Windows22, windows-2022, cmd.exe)	3m 8s
build (Windows22, windows-2022, cmd.exe)	3m 8s
	1h 4m 27s

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