added PowerShell automatic build script

src/build.ps1

@@ -0,0 +1,86 @@
+<#
+Name: Video2X Build Script
+Creator: K4YT3X
+Date Created: May 6, 2020
+Last Modified: May 6, 2020
+
+Description: A PowerShell script that will build Video2X
+executable (PE) releases automatically using PyInstaller.
+This script is currently only tuned for K4YT3X's environment.
+
+To start a PowerShell session with execution policy bypass
+powershell –ExecutionPolicy Bypass
+#>
+
+# version number
+$SCRIPT_VERSION = "1.0.0"
+$VIDEO2X_VERSION = "4.0.0"
+
+Write-Host -ForegroundColor White "Video2X Building Script Version $($SCRIPT_VERSION)
+Starting to build Video2X release packages"
+
+# build Video2X CLI
+Write-Host -ForegroundColor White "`nBuilding Video2X CLI"
+pyinstaller --noconfirm --log-level=WARN `
+    --onefile `
+    --add-data="wrappers;wrappers" `
+    --icon="images\video2x.ico" `
+    video2x.py
+
+# build Video2X GUI
+Write-Host -ForegroundColor White "`nBuilding Video2X GUI"
+pyinstaller --noconfirm --log-level=WARN `
+    --onefile `
+    --add-data="images;images" `
+    --add-data="locale;locale" `
+    --add-data="video2x_gui.ui;." `
+    --add-data="wrappers;wrappers" `
+    --icon="images\video2x.ico" `
+    video2x_gui.py
+
+# build setup script
+Write-Host -ForegroundColor White "`nBuilding Video2X setup script"
+pyinstaller --noconfirm --log-level=WARN `
+    --onefile `
+    --icon="images\video2x.ico" `
+    video2x_setup.py
+
+# remove old builds if found
+if (Test-Path "video2x-builds" -PathType any) {
+    Remove-Item -path "video2x-builds" -recurse
+}
+
+# create build directory
+New-Item "video2x-builds" -ItemType Directory
+
+# copy files into corresponding builds
+# full edition
+Write-Host -ForegroundColor White "`nCreating full package"
+New-Item "video2x-builds\video2x-$($VIDEO2X_VERSION)-win32-full" -ItemType Directory
+Copy-Item "dist\video2x.exe" -Destination "video2x-builds\video2x-$($VIDEO2X_VERSION)-win32-full\"
+Copy-Item "dist\video2x_gui.exe" -Destination "video2x-builds\video2x-$($VIDEO2X_VERSION)-win32-full\"
+Copy-Item -Path "$env:LOCALAPPDATA\video2x" -Destination "video2x-builds\video2x-$($VIDEO2X_VERSION)-win32-full\dependencies" -Recurse
+
+# overwrite paths to relative paths
+(Get-Content "video2x.yaml").replace("C:\Users\K4YT3X\AppData\Local\video2x\", "dependencies\") | Set-Content "video2x.yaml.relative"
+Move-Item "video2x.yaml.relative" -Destination "video2x-builds\video2x-$($VIDEO2X_VERSION)-win32-full\video2x.yaml"
+
+# light edition
+Write-Host -ForegroundColor White "`nCreating light package"
+New-Item "video2x-builds\video2x-$($VIDEO2X_VERSION)-win32-light" -ItemType Directory
+Copy-Item "dist\video2x.exe" -Destination "video2x-builds\video2x-$($VIDEO2X_VERSION)-win32-light\"
+Copy-Item "dist\video2x_gui.exe" -Destination "video2x-builds\video2x-$($VIDEO2X_VERSION)-win32-light\"
+Copy-Item "dist\video2x_setup.exe" -Destination "video2x-builds\video2x-$($VIDEO2X_VERSION)-win32-light\"
+Copy-Item "video2x.yaml" -Destination "video2x-builds\video2x-$($VIDEO2X_VERSION)-win32-light\"
+Copy-Item "requirements.txt" -Destination "video2x-builds\video2x-$($VIDEO2X_VERSION)-win32-light\"
+
+# clean up temporary files
+Write-Host -ForegroundColor White "`nDeleting temporary files"
+$pathsToRemove = "__pycache__", "build", "dist", "*.spec"
+
+foreach ($path in $pathsToRemove){
+    Write-Host "Removing path: $($path)"
+    Remove-Item -path $path -recurse
+}
+
+Write-Host -ForegroundColor White "`nBuild script finished"