Add BUFR file creation script and fix unit test bug in `test_get_bufr.py` #398

	on:
	pull_request:
	types: [opened, reopened, synchronize, edited]
	workflow_dispatch:

	jobs:
	test:
	name: unit_test
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python_version: ['3.8','3.9','3.10']
	steps:
	- name: Install Python
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python_version }}
	- name: Checkout repo
	uses: actions/checkout@v3
	with:
	token: ${{ secrets.GITHUB_TOKEN }}
	- name: Install eccodes
	run : \|
	sudo apt-get install -y libeccodes-dev
	- name: Install dependencies
	shell: bash
	run: \|
	python3 -m pip install --upgrade pip
	python3 -m pip install Bottleneck
	python3 -m pip install --upgrade setuptools
	cd $GITHUB_WORKSPACE
	pip install .
	- name: Run unit tests
	shell: bash
	run: \|
	python3 -m unittest discover tests

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