Add workflows for Windows (#1)

- Add a workflow for compiling on each commit (to master)
- Add a workflow for creating release assets

Author: canihavesomecoffee

.github/workflows/create_binaries.yml

@@ -0,0 +1,36 @@
+name: Create release binaries for the platforms
+
+on:
+  push:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  build_windows:
+    runs-on: windows-latest
+    steps:
+    - name: Check out repository
+      uses: actions/[email protected]
+    - name: Install Flutter
+      uses: subosito/[email protected]
+      with:
+        flutter-version: '2.2.2'
+    - name: Enable desktop support
+      run: flutter config --enable-windows-desktop
+    - name: Build Windows app
+      run: flutter build windows
+    - name: Copy VC redistributables
+      run: |
+        Copy-Item (vswhere -latest -find 'VC\Redist\MSVC\*\x64\*\msvcp140.dll') .
+        Copy-Item (vswhere -latest -find 'VC\Redist\MSVC\*\x64\*\vcruntime140.dll') .
+        Copy-Item (vswhere -latest -find 'VC\Redist\MSVC\*\x64\*\vcruntime140_1.dll') .
+      working-directory: ./build/windows/runner/Release
+    - name: Create artifact
+      uses: actions/upload-artifact@v2
+      with:
+        name: CCExtractor Flutter GUI Windows
+        path: |
+          ./build/windows/runner/Release/*.exe
+          ./build/windows/runner/Release/*.dll
+          ./build/windows/runner/Release/data
+

.github/workflows/create_release_binaries.yml

@@ -0,0 +1,38 @@
+name: Create release binaries for the platforms
+
+on:
+  release:
+    types:
+      - created
+
+jobs:
+  build_windows:
+    runs-on: windows-latest
+    steps:
+    - name: Check out repository
+      uses: actions/[email protected]
+    - name: Install Flutter
+      uses: subosito/[email protected]
+      with:
+        flutter-version: '2.2.2'
+    - name: Enable desktop support
+      run: flutter config --enable-windows-desktop
+    - name: Build Windows app
+      run: flutter build windows
+    - name: Copy VC redistributables
+      run: |
+        Copy-Item (vswhere -latest -find 'VC\Redist\MSVC\*\x64\*\msvcp140.dll') .
+        Copy-Item (vswhere -latest -find 'VC\Redist\MSVC\*\x64\*\vcruntime140.dll') .
+        Copy-Item (vswhere -latest -find 'VC\Redist\MSVC\*\x64\*\vcruntime140_1.dll') .
+      working-directory: ./build/windows/runner/Release
+    - name: Create zip
+      uses: papeloto/action-zip@v1
+      with:
+        files: ./build/windows/runner/Release/
+        dest: ./Windows.zip
+    - name: Upload as asset
+      uses: AButler/[email protected]
+      with:
+        files: './Windows.zip'
+        repo-token: ${{ secrets.GITHUB_TOKEN }}      
+