Changes to List up Campaigns.

added the new CTV_WEB_USER_ACQUISITION enum value to the campaigns/items/type response property for the response status 200

added the new LEARNING enum value to the campaigns/items/state response property for the response status 200

added the enum value LEARNING to the property items/ of the query request parameter states

the response optional property campaigns/items/ad_account_id became not read-only for the status 200

the response optional property campaigns/items/product_id became not read-only for the status 200