Add manifest file for Atom v1.50.0 x64 (#3055)

Co-authored-by: Nisarg Mehta <nmehta@mpl.mpg.de>

manifests/GitHub/Atom/1.50.0.yaml

@@ -0,0 +1,31 @@
+# ================== General ==================
+Id: GitHub.Atom
+Publisher: GitHub
+Name: Atom
+Author: GitHub
+Description: A hackable text editor for the 21st Century, free and open source.
+AppMoniker: atom
+Tags: Text Editor, IDE, Development
+FileExtensions: txt, cfg, ini, yaml
+
+# ================== License ==================
+Homepage: https://atom.io
+License: MIT License
+LicenseUrl: https://github.com/atom/atom/blob/master/LICENSE.md
+
+# ================= Installer =================
+Version: 1.50.0
+
+Switches:
+      Custom: /norestart
+      Silent: /silent
+      SilentWithProgress: /silent
+      #Interactive:
+      Language: en-US
+
+InstallerType: exe
+Installers:
+  - Arch: x64
+    Url: https://github.com/atom/atom/releases/download/v1.50.0/AtomSetup-x64.exe
+    Sha256: 152198adae7dbd46ff292f57fa20064f8e3fbf7e26e5e652af5d11aeb53c605a
+    Scope: user