lucas: store metadata
Store GPKG metadata:
GPKG_METADATA_ITEM_LUCAS_TABLE = "lucas_st_points_lc_lu"
GPKG_METADATA_ITEM_EUMAP_VERSION = "1.1.0"
GPKG_METADATA_ITEM_LUCAS_ST = "1"
GPKG_METADATA_ITEM_LUCAS_GROUP = "Land cover, Land use"
GPKG_METADATA_ITEM_LUCAS_VERSION = "1.2.0"