Add CI workflows for MacOS. (RedisLabs#101)

Author: yossigo

.github/workflows/ci.yml

@@ -14,3 +14,14 @@ jobs:
       run: sudo apt-get install autoconf automake pkg-config libevent-dev libpcre3-dev libssl-dev
     - name: Build
       run: autoreconf -ivf && ./configure && make
+  build-macos:
+    strategy:
+      matrix:
+        platform: [macos-latest]
+    runs-on: ${{ matrix.platform }}
+    steps:
+    - uses: actions/checkout@v1
+    - name: Install dependencies
+      run: brew install autoconf automake libtool libevent pkg-config openssl@1.1
+    - name: Build
+      run: autoreconf -ivf && PKG_CONFIG_PATH=/usr/local/opt/openssl@1.1/lib/pkgconfig ./configure && make