Implemented filter Merge Textures #283

Job	Run time
Build MeshLab (ubuntu-22.04, double_precision)	4m 44s
Build MeshLab (windows-latest, single_precision)	11m 14s
Build MeshLab (macos-latest, single_precision)	4m 54s
Build MeshLab (ubuntu-22.04-arm, single_precision)	3m 36s
Build MeshLab (macos-15-intel, double_precision)	48m 55s
Build MeshLab (ubuntu-22.04, single_precision)	4m 14s
Build MeshLab (macos-latest, double_precision)	4m 37s
Build MeshLab (ubuntu-22.04-arm, double_precision)	3m 45s
Build MeshLab (windows-latest, double_precision)	9m 32s
Build MeshLab (macos-15-intel, single_precision)	5m 39s
	1h 41m 10s

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