keyboxd: Make use of the config table
f8fbd9e7346e
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Description

keyboxd: Make use of the config table

* kbx/backend-sqlite.c (DATABASE_VERSION): New.
(table_definitions): Make column name of table config unique.
(create_or_open_database): Read and set the database version.
(get_config_value, set_config_value): New.

Well, kind of. For now we just store the database version. Note that
for existing databases the config table should first be dropped so
that the UNIQUE constraint can be used.