Improve the Xpress interface and add dynamic loading of the Xpress library #543

	# ref: https://github.com/actions/runner-images
	name: amd64 MacOS Bazel

	on: [push, pull_request, workflow_dispatch]

	# Building using the github runner environement directly.
	jobs:
	native:
	strategy:
	matrix:
	python: [
	{version: '3.9'},
	{version: '3.10'},
	{version: '3.11'},
	{version: '3.12'},
	]
	fail-fast: false
	name: MacOS • Bazel • Python-${{ matrix.python.version }}
	runs-on: macos-latest
	steps:
	- uses: actions/checkout@v4
	- name: Set Java to OpenJDK 17 (Temurin)
	uses: actions/setup-java@v3
	with:
	distribution: 'temurin'
	java-version: '17'
	- name: Check mvn
	run: mvn --version
	- name: Setup Python
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python.version }}
	- name: Check Python
	run: python --version
	- name: Install Bazel
	run: \|
	brew update
	brew unlink bazelisk
	brew install bazel
	- name: Check Bazel
	run: bazel version
	- name: Build
	run: >
	bazel build
	-c opt
	--subcommands=pretty_print
	//ortools/... //examples/...
	- name: Test
	run: >
	bazel test
	-c opt
	--test_output=errors
	//ortools/... //examples/...

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