This patch implements a new database wizard to guide users through the process
of setting up a new database and choosing sane encryption settings.
It also reimplements the master key settings to be more
user-friendly. Users can now add, change, or remove individual composite
key components instead of having to set all components at once. This
avoids confusion about a password being reset if the user only wants to
add a key file.
With these changes comes a major refactor of how database composite keys and key
components are handled. Copying of keys is prohibited and each key
exists only once in memory and is referenced via shared pointers. GUI
components for changing individual keys are encapsulated into separate
classes to be more reusable. The password edit and generator widgets
have also been refactored to be more reusable.
According to the AppStream specification org.keepassxc is not a valid
id. The product name is missing. This results in failures if one tries
to validate the file and makes it unusable where validation is enforced.
Additionally it seems specification don't allow the `<icon>` tag with
component type desktop-application. I am not sure this tag is strictly
necessary. In any case validation tests require this to be removed.
Fixing both of these issues ensure the AppStream appdata is compliant
and works anywhere passing validations is a requirement.
Also provide some other fixes and improvements to the appdata.
Minor validation failures:
- Fix missing captions for screenshots (`appstreamcli`)
- Fix descriptions cannot start with `<ul>` tag (`appstream-util`)
Other enhancements:
- Add more URL types, but could not add donation type because "&" is not
allowed in the `<url>` tag and using "%26" causes
`appstreamcli validate` to fail.
- Add `<developer_name>`, which in cases such as KeePassXC is a team name.
