Add `flux` executor support for `PsijWorker` #2

	name: Flux

	on:
	push:
	branches:
	- master
	pull_request:

	jobs:
	test:
	runs-on: ubuntu-latest
	permissions:
	packages: read
	strategy:
	fail-fast: false
	matrix:
	container: ['fluxrm/flux-sched:focal-v0.28.0']

	container:
	image: ${{ matrix.container }}
	options: "--platform=linux/amd64 --user root -it --init"

	name: ${{ matrix.container }}
	steps:
	- name: Make Space
	run: \|
	rm -rf /usr/share/dotnet
	rm -rf /opt/ghc
	- name: Checkout
	uses: actions/checkout@v4

	- name: Setup Python
	run: \|
	apt-get update && apt-get install -y python3-venv && apt-get install less
	export PATH=$PWD/bin:$PATH
	ln -s /usr/bin/python3 /usr/bin/python
	python -m pip install --upgrade pip && pip install -e ".[test]" && python -c 'import pydra; print(pydra.__version__)'
	pip install -e "git+https://github.com/adi611/psij-python.git@adi611-patch-2#egg=psij-python"
	- name: Start Flux and Run Test
	run: \|
	export PATH=$PWD/bin:$PATH
	flux start python -V
	flux start pytest --psij=flux --color=yes -vs --cov pydra --cov-config .coveragerc --cov-report xml:cov.xml --doctest-modules pydra/

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