create workflows

.github/workflows/FF_Linux.yml

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+name: FF_Linux
+
+on:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on:
+      ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Configure dependencies
+        shell: bash
+        run: sudo apt install -y g++-9-multilib gcc-9-multilib
+
+      - name: Create project
+        run: cd mp/src;devtools/bin/vpc /ff +game /mksln Game_FF
+
+      - name: Build project
+        env:
+          CC: gcc-9
+          CXX: g++-9
+        run: cd mp/src;make -f Game_FF.mak server_ff
+
+      - name: Pack
+        shell: bash
+        run: tar cJfv Linux.tar.xz mp/game/FortressForever2013/bin
+
+      - name: Upload product
+        uses: actions/upload-artifact@v2
+        with:
+          name: FF_2013
+          path: Linux.tar.xz

.github/workflows/FF_Windows.yml

@@ -0,0 +1,32 @@
+name: FF_Windows
+
+on:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on:
+      windows-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Configure dependencies
+        uses: ilammy/msvc-dev-cmd@v1
+
+      - name: Create project
+        run: cd mp/src;devtools/bin/vpc.exe /2013 /ff +game /mksln Game_FF.sln
+
+      - name: Build project
+        run: cd mp/src;devenv Game_FF.sln /Build Release
+
+      - name: Pack
+        shell: bash
+        run: tar cJfv Windows.tar.xz mp/game/FortressForever2013/bin
+
+      - name: Upload product
+        uses: actions/upload-artifact@v2
+        with:
+          name: FF_2013
+          path: Windows.tar.xz