More refactoring of lookup module #205

Job	Run time
lock-gdal (ubuntu-latest, 3.8)	50s
lock-gdal (ubuntu-latest, 3.12)	57s
lock-gdal (macos-latest, 3.8)	1m 12s
lock-gdal (macos-latest, 3.12)	47s
lock-gdal (windows-latest, 3.8)	1m 50s
lock-gdal (windows-latest, 3.12)	1m 57s
install-gdal-with-conda (ubuntu-latest, 3.8)	53s
install-gdal-with-conda-lock (ubuntu-latest, 3.8)	1m 14s
install-gdal-with-conda (macos-latest, 3.8)	1m 11s
install-gdal-with-micromamba (ubuntu-latest, 3.8)	28s
install-gdal-with-conda-lock (ubuntu-latest, 3.12)	1m 21s
install-gdal-with-conda (windows-latest, 3.8)	4m 47s
install-gdal-with-conda-lock (macos-latest, 3.8)	2m 35s
install-gdal-with-micromamba (macos-latest, 3.8)	47s
install-gdal-with-conda-lock (macos-latest, 3.12)	2m 11s
install-gdal-with-conda-lock (windows-latest, 3.8)	3m 59s
install-gdal-with-conda-lock (windows-latest, 3.12)	3m 56s
install-gdal-with-micromamba (windows-latest, 3.8)	2m 5s
	33m 0s

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