There is no way to "bulk upload" KBs at this time. I do not believe that there are plans to implement something like you've describe either.
However I would like to point out that it only takes a few seconds to enter a KB, unless you were going to create a large SQL query to inject them all at the same time I'm not sure that you would really be able to add them any faster. Chances are any time saved injecting them this way would be lost formatting the SQL query and writing the script to put them into the database in the first place.