* Closes#7545 - Support 1Password 1PUX import format based on https://support.1password.com/1pux-format/
* Closes#8367 - Support Bitwarden JSON import format (both unencrypted and encrypted) based on https://bitwarden.com/help/encrypted-export/
* Fixes#9577 - OPVault import when fields have the same name or type
* Introduce the import wizard to handle all import tasks (CSV, KDBX1, OPVault, 1PUX, JSON)
* Clean up CSV parser code to make it much more efficient and easier to read
* Combine all importer tests (except CSV) into one test file
* Fix various bugs in opvault parsing to include: TOTP parsing, date handling, naming convention, attachments, and multiple url's.
* Remove category groups that don't have any entries.
* Simplify tests by focusing on the resulting database instead of the parsing mechanics.
* Remove proprietary "freddy" opvault in favor of self-made "keepassxc" opvault.
* Fix#4069, select opvault file on macOS
* Support importing 1Password vaults (.opvault folders) into KDBX database
* Entry attributes are filled based on section and field name
* Expiration dates are set for entries
* Entry URL's are set from a wider array of fields
