Add gitea workflow

.gitea/workflows/ci.yaml

@@ -0,0 +1,20 @@
+name: libakerror CI Build
+run-name: ${{ gitea.actor }} libakerror test
+on: [push]
+
+jobs:
+  cmake_build:
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo "Triggered by ${{ gitea.event_name }} from ${{ gitea.repository }}@${{ gitea.ref }}. Building on ${{ runner.os }}."
+      - name: Check out repository code
+        uses: actions/checkout@v4
+      - name: cmake build
+        run: |
+          mkdir installdir
+          sudo apt-get update
+          sudo apt-get install cmake gcc
+          cmake -S . -B build -DCMAKE_INSTALL_PREFIX=installdir
+          cmake --build build
+          cmake --install build
+      - run: echo "🍏 This job's status is ${{ job.status }}."