More refactoring of lookup module #208

Job	Run time
lock-gdal (ubuntu-latest, 3.8)	57s
lock-gdal (ubuntu-latest, 3.12)	46s
lock-gdal (macos-latest, 3.8)	1m 21s
lock-gdal (macos-latest, 3.12)	52s
lock-gdal (windows-latest, 3.8)	1m 46s
lock-gdal (windows-latest, 3.12)	1m 49s
install-gdal-with-micromamba (ubuntu-latest, 3.8)	26s
install-gdal-with-conda (ubuntu-latest, 3.8)	44s
install-gdal-with-conda-lock (ubuntu-latest, 3.8)	1m 29s
install-gdal-with-micromamba (macos-latest, 3.8)	38s
install-gdal-with-conda (macos-latest, 3.8)	1m 2s
install-gdal-with-conda-lock (ubuntu-latest, 3.12)	1m 8s
install-gdal-with-micromamba (windows-latest, 3.8)	1m 12s
install-gdal-with-conda (windows-latest, 3.8)	2m 34s
install-gdal-with-conda-lock (macos-latest, 3.8)	1m 49s
install-gdal-with-conda-lock (macos-latest, 3.12)	1m 41s
install-gdal-with-conda-lock (windows-latest, 3.8)	4m 25s
install-gdal-with-conda-lock (windows-latest, 3.12)	4m 26s
	29m 5s

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