BlitzNG/database.mod: Standardised database connectivity for BlitzMax @ task/add-postgresql

kopia lustrzana https://github.com/bmx-ng/database.mod.git

Brucey 00213a093f Database.MariaDB. Initial Import.		3 lat temu
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client_plugin.h	00213a093f Database.MariaDB. Initial Import.	3 lat temu
plugin_auth.h	00213a093f Database.MariaDB. Initial Import.	3 lat temu
plugin_auth_common.h	00213a093f Database.MariaDB. Initial Import.	3 lat temu