Create Core DSL

[darkfrog26]

Currently the DSL is dependent on core that provides infrastructure for type-safe querying. However, in order to support adhoc queries without all the type-safe infrastructure (loading from a .sql file for example) we should make a "dsl" module that has no dependence on "model" to allow a basic DSL for creating, modifying, inserting, querying, and deleting from databases.

The "model" can depend on "dsl" in order to leverage the type-safe structure within the DSL.