Started with porting tests to this repo

- ported several tests from LLBLGen Pro Runtime Framework linq tests to
this repository, migrating to different AdventureWorks DB and removing
tests which fail due to missing features in linq to sql (sqlgeography,
different DB layout, no TPE inheritance).
- Fixed issue with decompiled resources files. Still not ideal, but it's
all there is at the moment.

For #2