Fix //examples/cpp:integer_programming_test by implementing linear_solver::nodes() for HiGHS. #3030

	# ref: https://github.com/actions/runner-images
	name: amd64 FreeBSD CMake

	on: [push, pull_request, workflow_dispatch]

	concurrency:
	group: ${{github.workflow}}-${{github.ref}}
	cancel-in-progress: true

	# Building using the github runner environement directly.
	jobs:
	vagrant:
	strategy:
	matrix:
	distro: [
	freebsd,
	#netbsd,
	#openbsd,
	]
	lang: [
	cpp,
	dotnet,
	java,
	python,
	]
	allow_failure: [true]
	fail-fast: false
	name: amd64•${{matrix.distro}}•CMake•${{matrix.lang}}
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v5
	- name: Virtualbox install
	run: \|
	sudo apt update -q
	sudo apt install -yq virtualbox
	virtualbox --help
	- name: Vagrant install
	run: \|
	sudo apt update -q
	wget https://releases.hashicorp.com/vagrant/2.4.7/vagrant_2.4.7-1_amd64.deb
	sudo apt install -y ./vagrant_2.4.7-1_amd64.deb
	vagrant --version
	- name: Build
	run: make --directory=cmake ${{matrix.distro}}_${{matrix.lang}}

	amd64_bsd_cmake:
	runs-on: ubuntu-latest
	needs: vagrant
	steps:
	- uses: actions/checkout@v5

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