FEATURE: Add Protected checkbox on Attachment upload form

[jertel]

Objective

To help protect analysts from accidentally executing malware attached to cases, provide optional (default is disabled) protection methodology where attachments will be zipped prior to being downloaded. If a file is already compressed/zipped, zip it again anyway, since a future enhancement may include password protecting the zip file, depending on availability of that functionality in the official Golang library.

After a user attaches a file, the Protected checkbox should reset back to unchecked.

If a user resets the attach form then the Protected checkbox and internal form state must reset to unchecked/false.

The "hint" for the new Protected checkbox should state: Protected attachments are automatically zipped prior to downloading. This helps prevent analysts from accidentally executing the potentially infected attachment.

Additional Requirements:

• Ensure protected box is editable
• Ensure its protected state in history tab