Check in CI that Meson and pkg-config offer the CMake options

tools/check_build_options/check_build_options.py takes the compile
definitions of the CMake target as the reference and checks that the
CMake pkg-config block, meson_options.txt (name and default), meson.build,
and the Meson section of the package manager docs have each option with
the same definition and condition. It runs as make check_build_options
in the ci_meson_install job, so a new CMake option cannot be forgotten
in the Meson build again.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

.github/workflows/ubuntu.yml

@@ -39,6 +39,8 @@ jobs:
           persist-credentials: false
       - name: Get latest CMake and ninja
         uses: lukka/get-cmake@fffaaafeea488556c2c12dad60690008bc1caacb # v4.4.2
+      - name: Check that Meson and pkg-config offer the CMake options
+        run: make check_build_options
       - name: Install Meson
         run: pip install meson
       - name: Install with Meson