[EuroPython 2021] Work on woql_schema and scripts

[Cheukting]

Welcome, EuroPython sprinters! We are about to release the new Python client that includes the document API. That means lots of testing and documentation. Or if you just wanna play around, feel free :-)

The stuff that we focus here:

• terminusdb-client/woqlschema/woql_schema.py : this is the file that let us build with the document API, think of it as ORM
• terminusdb-client/scripts/ : here is the scripts that allows using the terminusdb commend, the library Click is used here
• get_document, get_documents_by_type, get_all_documents, insert_document, replace_document and delete_document in terminusdb-client/woqlclient/woqlClient.py : this are the new API endpoint for the document API
• terminusdb-client/woql_type.py : supporting util for type conversion

Two things that is super welcome 1. Test on any of the above 2. docstring writing.

To set up the environment:

1. clone the repo, change to dev branch (very important)
2. set up the dev enviroment with pipenv (details here) Note: we are using Python >= 3.7 for the new dev
3. get the dev docker image of TerminusDB (with the bootstrap)
4. make sure you set up the EVN file with TERMINUSDB_TAG=dev

All work merge to dev branch please, we have not release this yet