Create 3.7.9.yaml for Python (#4710)

Adding Python X64 3.7.9 to WinGet.

manifests/Python/Python/3.7.9.yaml

@@ -0,0 +1,17 @@
+Id: Python.Python
+Version: 3.7.9
+Name: Python
+Publisher: Python
+Homepage: https://www.python.org
+License: PSF LICENSE AGREEMENT FOR PYTHON
+LicenseUrl: https://docs.python.org/3/license.html
+Description: Python is a programming language that lets you work more quickly and integrate your systems more effectively.
+AppMoniker: python
+Installers: 
+    - Arch: x64
+      Url: https://www.python.org/ftp/python/3.7.9/python-3.7.9-amd64.exe
+      InstallerType: Exe
+      Sha256: E69ED52AFB5A722E5C56F6C21D594E85C17CB29F12F18BB69751CF1714E0F987
+      Switches:
+        Silent: /Quiet
+        SilentWithProgress: /Passive