GitHub workflow fixes

1. Adds act support. https://github.com/nektos/act
2. Fixes OpenDingux workflows

OpenDingux workflows tested with act:

    act -W .github/workflows/retrofw_release.yml -j retrofw

.github/workflows/Android.yml

@@ -12,13 +12,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Install gettext
-      run: sudo apt install -y gettext
+      run: sudo apt update && sudo apt install -y gettext
 
     - name: Checkout
       uses: actions/checkout@v2
       with:
         fetch-depth: 0
-    
+
     - name: set up JDK 11
       uses: actions/setup-java@v2
       with:
@@ -37,13 +37,14 @@ jobs:
         path: android-project/app/.cxx
         key: android-cmake-${{ github.sha }}
         restore-keys: android-cmake-
-      
+
     - name: Build
       working-directory: ${{github.workspace}}
       shell: bash
       run: cd android-project && ./gradlew assembleDebug
 
     - name: Upload-Package
+      if: ${{ !env.ACT }}
       uses: actions/upload-artifact@v2
       with:
         name: devilutionx-debug.apk

.github/workflows/Linux_x86.yml

@@ -43,12 +43,14 @@ jobs:
       run: Packaging/nix/LinuxReleasePackaging.sh && Packaging/nix/AppImage.sh
 
     - name: Upload-Package
+      if: ${{ !env.ACT }}
       uses: actions/upload-artifact@v2
       with:
         name: devilutionx_linux_x86.tar.xz
         path: devilutionx.tar.xz
 
     - name: Upload-AppImage
+      if: ${{ !env.ACT }}
       uses: actions/upload-artifact@v2
       with:
         name: devilutionx_linux_x86.appimage

.github/workflows/Linux_x86_64_SDL1.yml

@@ -42,6 +42,7 @@ jobs:
       run: Packaging/nix/LinuxReleasePackaging.sh
 
     - name: Upload-Package
+      if: ${{ !env.ACT }}
       uses: actions/upload-artifact@v2
       with:
         name: devilutionx_linux_x86_64_SDL1.tar.xz

.github/workflows/Windows_x64.yml

@@ -40,6 +40,7 @@ jobs:
       run: cmake --build build -j $(nproc) --target package
 
     - name: Upload-Package
+      if: ${{ !env.ACT }}
       uses: actions/upload-artifact@v2
       with:
         name: devilutionx_x64.zip

.github/workflows/Windows_x86.yml

@@ -40,6 +40,7 @@ jobs:
       run: cmake --build build -j $(nproc) --target package
 
     - name: Upload-Package
+      if: ${{ !env.ACT }}
       uses: actions/upload-artifact@v2
       with:
         name: devilutionx_x86.zip

.github/workflows/opendingux_release.yml

@@ -16,19 +16,20 @@ jobs:
     - name: Create Build Environment
       run: >
         sudo apt update &&
-        sudo apt install -y curl git smpq &&
+        sudo apt install -y curl cmake git smpq squashfs-tools &&
         curl -L http://od.abstraction.se/opendingux/toolchain/opendingux-gcw0-toolchain.2021-03-10.tar.xz -o gcw0-toolchain.tar.xz &&
         sudo mkdir -p /opt/gcw0-toolchain && sudo chown -R "${USER}:" /opt/gcw0-toolchain &&
-        tar -C /opt -xvf gcw0-toolchain.tar.xz
+        tar -C /opt -xf gcw0-toolchain.tar.xz
 
     - name: Build
       working-directory: ${{github.workspace}}
       shell: bash
       run: Packaging/OpenDingux/build.sh rg350
       env:
-      - TOOLCHAIN: /opt/gcw0-toolchain
+        TOOLCHAIN: /opt/gcw0-toolchain
 
     - name: Upload-Package
+      if: ${{ !env.ACT }}
       uses: actions/upload-artifact@v2
       with:
         name: devilutionx-rg350.opk.zip
@@ -45,19 +46,20 @@ jobs:
     - name: Create Build Environment
       run: >
         sudo apt update &&
-        sudo apt install -y curl git smpq &&
-        curl -L http://od.abstraction.se/opendingux/toolchain/opendingux-lepus-toolchain.2021-03-10.tar.xz -o lepus-toolchain.tar.xz &&
+        sudo apt install -y curl cmake git smpq squashfs-tools &&
+        curl -L http://od.abstraction.se/opendingux/toolchain/opendingux-lepus-toolchain.2021-03-11.tar.xz -o lepus-toolchain.tar.xz &&
         sudo mkdir -p /opt/lepus-toolchain && sudo chown -R "${USER}:" /opt/lepus-toolchain &&
-        tar -C /opt -xvf lepus-toolchain.tar.xz
+        tar -C /opt -xf lepus-toolchain.tar.xz
 
     - name: Build
       working-directory: ${{github.workspace}}
       shell: bash
       run: Packaging/OpenDingux/build.sh lepus
       env:
-      - TOOLCHAIN: /opt/lepus-toolchain
+        TOOLCHAIN: /opt/lepus-toolchain
 
     - name: Upload-Package
+      if: ${{ !env.ACT }}
       uses: actions/upload-artifact@v2
       with:
         name: devilutionx-lepus.opk.zip

.github/workflows/retrofw_release.yml

@@ -16,19 +16,21 @@ jobs:
     - name: Create Build Environment
       run: >
         sudo apt update &&
-        sudo apt install -y curl git smpq &&
-        curl -L https://github.com/retrofw/buildroot/releases/download/2018.02.11/mipsel-linux-uclibc_x64.tar.gz -o retrofw-toolchain.tar.xz &&
-        sudo mkdir -p /opt/mipsel-linux-uclibc && sudo chown -R "${USER}:" /opt/mipsel-linux-uclibc &&
-        tar -C /opt -xvf retrofw-toolchain.tar.xz
+        sudo apt install -y curl cmake git smpq squashfs-tools gettext &&
+        curl -L https://github.com/Poligraf/retrofw_buildroot_gcc11/releases/download/2.3.2/host.tar.gz -o retrofw-toolchain.tar.gz &&
+        sudo mkdir -p /opt/retrofw-toolchain && sudo chown -R "${USER}:" /opt/retrofw-toolchain &&
+        tar -C /opt/retrofw-toolchain --strip-components=1 -xf retrofw-toolchain.tar.gz &&
+        cd /opt/retrofw-toolchain && ./relocate-sdk.sh
 
     - name: Build
       working-directory: ${{github.workspace}}
       shell: bash
       run: Packaging/OpenDingux/build.sh retrofw
       env:
-      - TOOLCHAIN: /opt/mipsel-linux-uclibc
+        TOOLCHAIN: /opt/retrofw-toolchain
 
     - name: Upload-Package
+      if: ${{ !env.ACT }}
       uses: actions/upload-artifact@v2
       with:
         name: devilutionx-retrofw.opk.zip