[ITS][25Q4] centralize handling of multiple ArUco versions

Details: centralized ArUco marker detection in opencv_processing_utils,
since some tests do not use the main find_aruco_markers method.

Flag: TEST_ONLY
Bug: 372700544
Test: ran test_preview_distortion and test_zoom
Change-Id: Ie0500b71170ab3bbe38621b852d976cdd0738157