add vivaldi as flatpak (#274)

Author: haggen88

usr/lib/webapp-manager/common.py

@@ -202,6 +202,8 @@ def get_supported_browsers():
                 Browser(BROWSER_TYPE_WATERFOX_FLATPAK, "Waterfox (Flatpak)", ".local/share/flatpak/exports/bin/net.waterfox.waterfox", ".local/share/flatpak/exports/bin/net.waterfox.waterfox"),
                 Browser(BROWSER_TYPE_CHROMIUM, "Vivaldi", "vivaldi-stable", "/usr/bin/vivaldi-stable"),
                 Browser(BROWSER_TYPE_CHROMIUM, "Vivaldi Snapshot", "vivaldi-snapshot", "/usr/bin/vivaldi-snapshot"),
+                Browser(BROWSER_TYPE_CHROMIUM, "Vivaldi (Flatpak)", "/var/lib/flatpak/exports/bin/com.vivaldi.Vivaldi", "/var/lib/flatpak/exports/bin/com.vivaldi.Vivaldi"),
+                Browser(BROWSER_TYPE_CHROMIUM, "Vivaldi (Flatpak)", ".local/share/flatpak/exports/bin/com.vivaldi.Vivaldi", ".local/share/flatpak/exports/bin/com.vivaldi.Vivaldi"),
                 Browser(BROWSER_TYPE_CHROMIUM, "Microsoft Edge", "microsoft-edge-stable", "/usr/bin/microsoft-edge-stable"),
                 Browser(BROWSER_TYPE_CHROMIUM, "Microsoft Edge Beta", "microsoft-edge-beta", "/usr/bin/microsoft-edge-beta"),
                 Browser(BROWSER_TYPE_CHROMIUM, "Microsoft Edge Dev", "microsoft-edge-dev", "/usr/bin/microsoft-edge-dev"),