Update CI to use cmake.

Author: wolfpld

.github/workflows/arch.yaml

@@ -11,11 +11,11 @@ jobs:
     - name: Install dependencies
       run: |
         pacman -Syu --noconfirm
-        pacman -S --noconfirm --needed meson ninja gmime3 nodejs git
+        pacman -S --noconfirm --needed cmake ninja gmime3 nodejs git
     - uses: actions/checkout@v4
-    - run: meson setup --buildtype release build
-    - run: meson compile -C build
-    - run: meson install -C build
+    - run: cmake -B build -G Ninja -DCMAKE_BUILD_TYPE=Release
+    - run: cmake --build build
+    - run: cmake --install build
       env:
         DESTDIR: ${{ github.workspace }}/install
     - run: tar -zcvf install.tar.gz -C install .