Changed ZENOH_DEBUG and FRAG_MAG_SIZE CMake options to cache variables. #105

	#
	# Copyright (c) 2023 ZettaScale Technology
	#
	# This program and the accompanying materials are made available under the
	# terms of the Eclipse Public License 2.0 which is available at
	# http://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
	# which is available at https://www.apache.org/licenses/LICENSE-2.0.
	#
	# SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
	#
	# Contributors:
	# Błażej Sowa, <blazej@fictionlab.pl>
	#
	name: freertos_plus_tcp

	on:
	push:
	branches: [ '**' ]
	pull_request:
	branches: [ '**' ]

	jobs:
	build:
	name: Build on ${{ matrix.os }}
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-latest]
	steps:
	- uses: actions/checkout@v4
	- uses: jwlawson/actions-setup-cmake@v1.13
	- name: Install requirements
	run: \|
	sudo apt update
	sudo apt install -y ninja-build libslirp-dev
	- name: Build examples
	run: \|
	cd examples/freertos_plus_tcp
	cmake -Bbuild -G"Ninja Multi-Config"
	cmake --build ./build --config Debug
	cmake --build ./build --config Release
	env:
	Z_FEATURE_PUBLICATION: 1
	Z_FEATURE_SUBSCRIPTION: 1
	Z_FEATURE_QUERYABLE: 1
	Z_FEATURE_QUERY: 1

Provide feedback