Resolve "BE: Load workspace presets from BE - Opengeoweb"

Closes #6 (closed)

In this MR:

• setup of data for opengeoweb
• change in cli.py: if no environment variable DEPLOY_ENVIRONMENT is set, automatically grab the open data

How to test:

• build the app without setting DEPLOY_ENVIRONMENT so it defaults to open (see here
  • alternatively, you could also do export DEPLOY_ENVIRONMENT="open"
• check that calling the /workspacepreset gives the contents of the hamburger menu in opengeoweb
  • You could do this by opening http://127.0.0.1:8080/workspacepreset
  • Or going to http://127.0.0.1:8080/docs and executing the call there

Also:

• build with docker, set the .env variable without explicitly setting DEPLOY_ENVIRONMENT=open (see here
  • If it is set, you could run unset DEPLOY_ENVIRONMENT
• running the docker build command will generate a warning, that value is set to empty string
• verify that containers are built and the correct data is shown
  • Use curl -kL https://0.0.0.0:4443/workspacepreset | python -m json.tool
  • Or go to https://0.0.0.0:4443/docs and use the interface

FYI: Follow up:

To deploy to opengeoweb:

• a tag should be created
• a manual step should be done to update the database