Email header parser

[cohesive-flight]

What type of request is this?

New tool idea

Clear and concise description of the feature you are proposing

It'll parse provided email headers and present the information in a more readable format.

Is their example of this tool in the wild?

https://github.com/cyberdefenders/email-header-analyzer/
https://mxtoolbox.com/EmailHeaders.aspx

Additional context

No response

Validations

• Check the feature is not already implemented in the project.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.
• Check that the feature can be implemented in a client side only app (IT-Tools is client side only, no server).

[sharevb]

Hi @cohesive-flight, implemented in #1254