Export Nimbus DB when copying databases

Author: freshstrangemusic

firefox-ios/Client/Frontend/Settings/Main/Debug/ExportBrowserDataSetting.swift

@@ -22,7 +22,7 @@ class ExportBrowserDataSetting: HiddenSetting {
                 fromRelativeDirectory: "",
                 toAbsoluteDirectory: documentsPath
             ) { file in
-                return file.hasPrefix("browser.") || file.hasPrefix("logins.") || file.hasPrefix("metadata.")
+                return file.hasPrefix("browser.") || file.hasPrefix("logins.") || file.hasPrefix("metadata.") || file.hasPrefix("nimbus.")
             }
         } catch {}
     }