Integration: SQL generation

[eliasmalik]

Integration of the SQL generation (see #31) into the integration branch.

Primary job here is to substitute the spoofed DB operations from @SimonLab endpoints-generator-2 branch with real DB ops.

From inspecting the code, seems like this is the right place to put the SQL queries.

I obviously need to make the interface asynchronous, so may need to make some changes to the calling code as well.

@SimonLab comments welcome.

[SimonLab]

I've added these issues #59 #60 which details the config files and how to initialise the plugin. It might change a bit the way you are loading the fields for the database, let me know if this seems logic for you.

[eliasmalik]

Done in #64