complete more pkgs

- bitwarden is configured to install the cask on macos and the appimage
  on linux
- dbeaver is configured using the flatpak installation
- added handling of flatpaks

vars/bitwarden.yml

@@ -0,0 +1,7 @@
+---
+install_prefix: "{{ default_config.install_prefix }}"
+install_dir: /opt/bitwarden
+use_appimage: true
+dobecome: true
+owner: root
+group: root