* Send item domain name to fastmail
- Added a metadata field (forDomain:) to the Fastmail Forwarder API
request that's set to the domain name of the item being added to the
vault, or to "" if the username generator is being used in standalone
mode. This allows the user's Fastmail account to display the domain
name for the username that was generated.
* Minor changes for readability
* dotnet format
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Co-authored-by: ✨ Audrey ✨ <ajensen@bitwarden.com>
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