AO3-6232 Include IP, referer, skin in support tickets

[brianjaustin]

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Issue

https://otwarchive.atlassian.net/browse/AO3-6232

Purpose

Adds custom field to Zoho tickets for the submitter's IP address, referer, and the skin they're using at the time of submitting a support ticket

References

The names in this PR will need a final approval from support before merging, to make sure they've created the fields in Zoho as required

Credit

Brian Austin (they/he)

[Bilka2]

In SkinsHelper#skin_tag, there is also a check for params[:site_skin], e.g. https://test.archiveofourown.org/?site_skin=928.

Because you're essentially replicating the skin setting logic from the #skin_tag method, what do you think about separating that logic out into its own method that can be used both for the support tickets and for #skin_tag?

[sarken]

I am so excited about this -- thank you for working on it! I just have some nitpicks and something we should probably check with Support/PAC about.

[sarken]

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