Single import for workflows

[liamhuber]

Expose the node-creation decorators (right now just node) as class attributes on the workflow so that you can work with the workflow infrastructure after only importing Workflow.

Eg the following now works:

from pyiron_contrib.workflow.workflow import Workflow

@Workflow.wrap_as.node("y")
def plus_one(x: int = 0) -> int:
    return x + 1

plus_one().outputs.y.value
>>> 1

[coveralls]

Pull Request Test Coverage Report for Build 4853687399

• 5 of 5 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.03%) to 12.519%

---

Totals
Change from base Build 4853665754:	0.03%
Covered Lines:	1530
Relevant Lines:	12221

---

💛 - Coveralls

[liamhuber]

Failed tests are mamba seg faulting

Run mamba env update -n my-env -f environment.yml
  mamba env update -n my-env -f environment.yml
  shell: /usr/bin/bash -l {0}
  env:
    INPUT_RUN_POST: true
    CONDA: /usr/share/miniconda3
    CONDA_PKGS_DIR: /home/runner/conda_pkgs_dir
    DATE: 20230426
conda-forge/linux-64                                        Using cache
conda-forge/noarch                                          Using cache
Looking for: ['ase=3.22.1', 'coveralls', 'coverage', 'codacy-coverage', 'matplotlib=3.7.1', 'numpy=1.24.3', 'pyiron_base=0.5.36', 'pyiron_atomistics=0.2.66', 'pyparsing=3.0.9', 'scipy=1.10.1', 'seaborn=0.12.2', 'scikit-image=0.20.0', 'randspg=0.0.1', 'boto3=1.26.118', 'moto=4.1.8', 'pycp2k=0.2.2', 'typeguard=3.0.2', 'aws-sam-translator=1.65.0']
/home/runner/work/_temp/3f95bc7e-22d4-4021-88d5-3b267a7ee143.sh: line 1:  2119 Segmentation fault      (core dumped) mamba env update -n my-env -f environment.yml
Error: Process completed with exit code 139.