libsqlite3.so.0 added into the list of allowed libraries

[rinigus]

To my understanding, SQLite is used in several core parts of Sailfish. Its an important library in Linux and allows to expand functionality of applications in SFOS. In particular, it allows to use other libraries developed in Linux that use SQLite as a backend for their storage. In my case, adding sqlite3 into the list of allowed libraries allows me to incorporate a new geocoder into offline maps server application that I wrote for SFOS.

[jlehtoranta]

The use of sqlite3 is already allowed via the Qt API, but it makes sense to allow libsqlite3 as well. So, lgtm + targeting SFOS 2.1.1.

[rinigus]

Thank you very much! Indeed, Qt API allows to use it, but its also needed for libs that use sqlite directly.

Since its my first commit, I think that I missed adding sqlite to allowed_requires.conf . Maybe there are more places as well... Should I submit additional PR or would you add sqlite yourself to allowed_requires?