Add github actions

Author: martinsumner

.github/workflows/erlang.yml

@@ -0,0 +1,26 @@
+name: Erlang CI
+
+on:
+  push:
+    branches: [ develop-3.0 ]
+  pull_request:
+    branches: [ develop-3.0 ]
+
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    container:
+      image: erlang:22.3.3
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Compile
+        run: ./rebar3 compile
+      - name: Run xref and dialyzer
+        run: ./rebar3 do xref, dialyzer
+      - name: Run eunit
+        run: ./rebar3 do eunit

.gitignore

@@ -13,3 +13,4 @@ c_src/system
 .rebar
 _build
 .DS_Store
+rebar.lock