Ticket #4170: implement CI via GitHub Actions

Signed-off-by: Yury V. Zaytsev <yury@shurup.com>

.github/workflows/ci.yml

@@ -0,0 +1,18 @@
+name: CI
+on: [ push ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+
+    steps:
+      - uses: actions/checkout@4
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get install -y autoconf gettext autopoint libtool check indent
+          sudo apt-get install -y e2fslibs-dev libaspell-dev libglib2.0-dev libgpm-dev libncurses5-dev libslang2-dev libssh2-1-dev libx11-dev unzip
+
+      - name: Bootstrap build system
+        run: ./autogen.sh