Upgrade all manifests to v1 manifest format

manifests/g/GitHub/Atom/1.45.0/GitHub.Atom.yaml

@@ -0,0 +1,25 @@
+PackageIdentifier: GitHub.Atom
+PackageName: Atom
+Moniker: atom
+PackageVersion: 1.45.0
+Publisher: GitHub
+License: Copyright (c) 2011-2020 GitHub Inc. - MIT License
+LicenseUrl: https://github.com/atom/atom/blob/master/LICENSE.md
+MinimumOSVersion: 10.0.0.0
+PackageUrl: https://atom.io/
+ShortDescription: A hackable text editor for the 21st Century, free and open source.
+Tags:
+- atom
+- texteditor
+- IDE
+InstallerType: exe
+Installers:
+- Architecture: x64
+  InstallerUrl: https://github.com/atom/atom/releases/download/v1.45.0/AtomSetup-x64.exe
+  InstallerSha256: 2A234BCEF846D35A50E50516B000788AC63715E5B320AAACDA5193947B1EFF3C
+  InstallerSwitches:
+    Silent: /silent
+    SilentWithProgress: /silent
+PackageLocale: en-US
+ManifestType: singleton
+ManifestVersion: 1.0.0