ci: Add build workflow

.github/workflows/build.yml

@@ -0,0 +1,29 @@
+env:
+  DEPS: build-essential meson git libglib2.0-dev libedit-dev
+  LIBCMATRIC_DEPS: libsoup-3.0-dev libolm-dev libjson-glib-dev libsqlite3-dev libgcrypt20-dev libsecret-1-dev
+
+name: eigenvalue build
+run-name: Build on ${{ github.actor }} with gcc
+on: [push]
+jobs:
+  Build-gcc:
+    runs-on: ubuntu-24.04
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install deps
+        run: sudo apt -y install --no-install-recommends $DEPS $LIBCMATRIC_DEPS
+      - name: setup
+        run: meson setup _build
+      - name: build
+        run: meson compile -C _build
+  Build-clang:
+    runs-on: ubuntu-24.04
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install deps
+        run: sudo apt -y install --no-install-recommends clang $DEPS $LIBCMATRIX_DEPS
+      - name: setup
+        run: CC=clang meson setup _build
+      - name: build
+        run: meson compile -C _build
+