Add getting started with Autotools example

[czoido]

Like this one: https://docs.conan.io/en/2.0/tutorial/consuming_packages/build_simple_cmake_project.html for AutotTools There's already an example for Meson: https://docs.conan.io/en/2.0/examples/tools/meson/mesontoolchain/build_simple_meson_project.html#examples-tools-meson-toolchain-build-simple-meson-project