Julia support

[sverhoeven]

Add julia so wflow.jl can be run.

Tested with vagrant in notebook and ipython in Jupyter terminal

from juliacall import Main
Main.Pkg.add("BasicModelInterface")

Fixes #149

[sverhoeven]

Current implementation in notebook gives:

File /opt/conda/envs/ewatercycle/lib/python3.10/site-packages/juliapkg/state.py:58, in reset_state()
     56 if project:
     57     if not os.path.isabs(project):
---> 58         raise Exception(f'{project_key} must be an absolute path')
     59     STATE['project'] = project
     60 else:

Exception: PYTHON_JULIAPKG_PROJECT must be an absolute path

So we need alternative.

[sverhoeven]

Current implementation in notebook gives:

File /opt/conda/envs/ewatercycle/lib/python3.10/site-packages/juliapkg/state.py:58, in reset_state()
     56 if project:
     57     if not os.path.isabs(project):
---> 58         raise Exception(f'{project_key} must be an absolute path')
     59     STATE['project'] = project
     60 else:

Exception: PYTHON_JULIAPKG_PROJECT must be an absolute path

So we need alternative.

Using fork https://github.com/eWaterCycle/pyjuliapkg/tree/expanduser

[sverhoeven]

Worked in vagrant so should work in src.