Install inno setup and invoke it in a new step to create the installer

azure-pipelines.yml

@@ -70,6 +70,7 @@ jobs:
       mkdir C:\Qt
       python -m aqt install -O c:\Qt 5.12.4 windows desktop win64_msvc2017_64
       choco install -y wget
+      choco install innosetup 
       wget "https://sourceforge.net/projects/sevenzip/files/7-Zip/18.05/7z1805-src.7z" -P $(Build.SourcesDirectory)\compressed_archive
       7z x $(Build.SourcesDirectory)\compressed_archive\7z1805-src.7z -o$(Build.SourcesDirectory)\compressed_archive\lib7zip
     displayName: 'Install dependencies'
@@ -79,4 +80,8 @@ jobs:
       qmake CONFIG+="7zip"
       nmake
     displayName: 'Build'
+  - script: |
+      iscc
+    displayName: 'Create installer'
+