add auto-build on github actions (#4)

.github/workflows/build.yml

@@ -0,0 +1,56 @@
+name: Build
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: "15 0 */7 * *"
+
+jobs:
+  build:
+    name: Build plugins
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        amxmodx: ["1.9", "1.10"]
+      fail-fast: false
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v1
+
+      - name: Download AMXX && ReAPI and unpacking
+        env:
+          AMXMODX: ${{ matrix.amxmodx }}
+        run: |
+          curl -s https://www.amxmodx.org/amxxdrop/$AMXMODX/$(curl https://www.amxmodx.org/amxxdrop/$AMXMODX/amxmodx-latest-base-linux) -# | tar xz
+          curl -OL https://github.com/s1lentq/reapi/releases/download/5.19.0.211/reapi_5.19.0.211-dev.zip -#
+          unzip reapi_*-dev.zip && rm reapi_*-dev.zip
+          cd addons/amxmodx && rm scripting/*.sma && rm plugins/*.amxx
+
+      - name: Compile plugins AMXX Version
+        run: |
+          cp -Rf ./rezombieplague/* ./addons/amxmodx/scripting
+
+          mkdir -p ./addons/amxmodx/plugins/rezp/addons
+          mkdir -p ./addons/amxmodx/plugins/rezp/classes
+          mkdir -p ./addons/amxmodx/plugins/rezp/gamemodes
+          mkdir -p ./addons/amxmodx/plugins/rezp/items
+          mkdir -p ./addons/amxmodx/plugins/rezp/menus
+          mkdir -p ./addons/amxmodx/plugins/rezp/subclasses
+          mkdir -p ./addons/amxmodx/plugins/rezp/weapons
+
+          cd addons/amxmodx/scripting
+          chmod +x amxxpc32.so
+          chmod +x amxxpc
+
+          function realpath {
+            echo $(cd $(dirname $1); pwd)/$(basename $1);
+          }
+          amxxpc_path=$(realpath amxxpc)
+
+          find * -name "*.sma" \
+            -exec echo -e "\n\n> Compile {} <" \;\
+            -exec ${amxxpc_path} {} \
+                -iinclude \
+                -o../plugins/{} \
+            \;