[Runtime] Change the runtime database backend to sqlite

Using Sqlite database instead of JSON format database, it will guarantee
data security and data integrity.

The Tizen platform is not swithed to Sqlite db backend right now, since there're some
corresponding changes should be token place in the Tizen package information
installer, but it is being reworked right now. So the switching for Tizen will
be happened after the rework is finished.

The source code is refered to the file sqlite_server_bound_cert_store.cc in
Chromium for the usages of sql::Connection.