Support for REGEXP

[FredrikKarlssonSpeech]

Hi,

SQLite does not come with an implementation of a reglar expressions function, but one can be added at the C level or through loaning extensions
(like these ones)
https://github.com/eatnumber1/sqlite-regexp
https://github.com/ralight/sqlite3-pcre

Now, hdbc-sqlite3 does not support either of these (as "load" is not supported), so I would like it very much if you would consider providing for some implementation of REGEXP in the HDBC-sqlite3 library itself.

Fredrik