Add filter by site_ids, and wrapper method for user sites

[WolfwithSword]

I'm still working on getting some real data with a contact of mine, but I am thinking it would be very helpful to add in a list of site_id's as a filter, similar to the limit filter in the GetOrdersAsync or GoAffProEventDetector, in case a user is using their GoAffPro account for multiple affiliate programs and wants to separate them. I know the order object may include it per order object if requested in the fields, but it can be nice to setup the filtering in the request itself.

As a sidenote, I am currently getting raw data from the following endpoints using just GET requests at the moment, not with the library, as a first step.

/user/sites?status=approved&fields=id,name,logo,website,status,currency,affiliate_portal,ref_code,referral_link,coupon

• For this one, I'll share the response here since it's site id related. A wrapper function for this returning with a collection of Site object would be very useful down the line to see which sites a user has access to. I am extremely interested in if this returns duplicates and such since the person I have helping me has two referral codes/links in their partnership with gamersupps, and I know a few others with 2+ codes as well. Curious how it'll return.

• For the endpoints after this, when I receive data I'll likely make another issue pasting them in (with redacted/generalized info in case some is sensitive), which could help make more objects/wrapper methods, tests, etc.

/user/states/aggregate?site_ids={a_site_id}&fields=total_sales,other_commission_earned,revenue_generated,sale_commission_earned,commission_paid

/user/feed/orders?site_ids={a_site_id}&fields=id,number,total,subtotal,line_items,commission,created_at,currency,site_id,sub_id,conversion_details

/user/feed/traffic?site_ids={a_site_id}

/user/commissions?site_ids={a_site_id}

And also worth noting - not all site_ids are in the public sites endpoint. Only ones in the marketplace are - for example, GamerSupps site id is 165328 but this I found out by checking the network calls from here https://gamersupps.goaffpro.com/login since it's not in the public marketplace.