Added Python 3.9.1 (#5333)

manifests/Python/Python/3.9.1.yaml

@@ -0,0 +1,21 @@
+  
+Id: Python.Python
+Version: 3.9.1
+Name: Python
+Publisher: Python
+License: PSF LICENSE AGREEMENT FOR PYTHON
+LicenseUrl: https://docs.python.org/3/license.html
+AppMoniker: python
+Tags: python, python3, programming language, script, glue language
+FileExtensions: py,pyw,pyc,pyo
+Description: Python is a programming language that lets you work more quickly and integrate your systems more effectively.
+Homepage: https://www.python.org
+Installers:
+  - Arch: x64
+    Url: https://www.python.org/ftp/python/3.9.1/python-3.9.1-amd64.exe
+    Sha256: 9DB77E7282945D3409ABC2A43142AE0F0B829F1656BED07BC18526E765F05F86
+    InstallerType: exe
+    Switches:
+      Silent: /Quiet
+      SilentWithProgress: /Passive
+      Custom: PrependPath=1