Changes to Update Creator Studio drop edits

request property stages/items/stage_type was restricted to a list of enum values

the request property stages/items/label became required

added the new optional request property launch_date_pending

the request property creator_payout_address became nullable

the request property max_supply became nullable

the request property stages/items/allowlist_file_token became nullable

the request property stages/items/description became nullable

the request property stages/items/max_token_supply_for_stage became nullable

added the new public_sale enum value to the request property stages/items/stage_type

added the new signed_presale enum value to the request property stages/items/stage_type

added the media type */* for the response with the status 400

added the media type */* for the response with the status 403

added the media type */* for the response with the status 404

added the optional property code to the response with the 409 status