feat: replaced travis with gh actions

Signed-off-by: Yash Pandey (YP) <[email protected]>

Author: EmperorYP7

.github/workflows/ci.yml

@@ -0,0 +1,59 @@
+#  Copyright 2020 The casbin Authors. All Rights Reserved.
+
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  linux:
+    name: "Linux Ubuntu 20.04"
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout
+        id: checkout
+        uses: actions/checkout@v2
+      - name: Building files
+        id: building-files
+        run: |
+          make
+      - name: Building library
+        id: building-lib
+        run: |
+          make library
+      - name: Cleanup
+        id: cleanup
+        run: |
+          make clean
+
+  macos:
+    name: "macOS Catalina 10.15"
+    runs-on: macos-latest
+    steps:
+      - name: Checkout
+        id: checkout
+        uses: actions/checkout@v2
+      - name: Building files
+        id: building-files
+        run: |
+          make
+      - name: Building library
+        id: building-lib
+        run: |
+          make library
+      - name: Cleanup
+        id: cleanup
+        run: |
+          make clean