Add manifest file for Mozilla Firefox (Guarani) v79.0 x64 (#2753)

manifests/Mozilla/Firefox/Firefox_v79.0/79.0 (GN).yaml

@@ -0,0 +1,27 @@
+# ================== General ==================
+
+Id: Mozilla.Firefox.Firefox_v79.0
+Version: 79.0 (GN)
+Name: Firefox (Guarani)
+Publisher: Mozilla
+AppMoniker: firefox
+Tags: firefox, Firefox (Guarani)
+Description: Mozilla Firefox is free and open source software, built by a community of thousands from all over the world.
+
+# ================== License ==================
+
+Homepage: https://www.mozilla.org/en-US/firefox/new/
+License: Mozilla Public License Version 2.0
+LicenseUrl: https://www.mozilla.org/en-US/MPL/2.0/
+
+# ================= Installer =================
+
+Installers:
+  - Arch: x64
+    Url: https://download-installer.cdn.mozilla.net/pub/firefox/releases/79.0/win64/gn/Firefox%20Setup%2079.0.msi
+    Sha256: 787FBD37B1DCFEE87F9CE7D6891A5D89AC3A2D5EBAA7749B6FE93373EF338C07
+    InstallerType: msi
+    Switches:
+          Custom: /norestart
+          Silent: /qn
+          SilentWithProgress: /qb