Python SDK client for framework API

[pcrespov]

• [x] based on openapi specs. Auto generation of python client based
• [x] package and easy installation
• [x] doc with examples. Use redoc to insert examples
• [x] front-end+backend: user can create auth tokens for sdk
• [x] create meta-template and adapt python client
• [x] generate notebooks examples ( asked during NIH review)

[pcrespov]

• openapi-generator support for python clients is limited in OAuth grant types: only supports OAuth2 implicit flow and not client credentials as we wish
• ~Generated mock client for web gateway as tests: https://github.com/pcrespov/osparc-simcore-python-client~

[pcrespov]

Update

• autogenerated client in https://github.com/ITISFoundation/osparc-simcore-python-client
• Doc rendered in https://itisfoundation.github.io/osparc-simcore-python-client/#/