Harden updater and add icon-based installer release pipeline

build_exe.ps1

@@ -1,6 +1,16 @@
+param(
+  [string]$Version = ""
+)
+
 python -m pip install --upgrade pip
 pip install -r requirements.txt
-pip install pyinstaller
-pyinstaller --noconfirm --onefile --windowed --name "Real-Debrid-Downloader" real_debrid_downloader_gui.py
+pip install pyinstaller pillow
 
-Write-Host "Build fertig: dist/Real-Debrid-Downloader.exe"
+if ($Version -ne "") {
+  python scripts/set_version.py $Version
+}
+
+python scripts/prepare_icon.py
+pyinstaller --noconfirm --windowed --onedir --name "Real-Debrid-Downloader" --icon "assets/app_icon.ico" real_debrid_downloader_gui.py
+
+Write-Host "Build fertig: dist/Real-Debrid-Downloader/Real-Debrid-Downloader.exe"