Need card id for "Card already linked"

[iasif-experlabs]

Do we plan to add card id if user enters duplicate card. We do get error toast "Card already linked" but onCardLinkingFailed(..) doesn't return card ID which could be helpful for some users in some cases.

        Fidel.setCardLinkingObserver(object : FidelCardLinkingObserver {
            override fun onCardLinkingFailed(linkResultError: LinkResultError) {
                Log.e(Fidel.FIDEL_DEBUG_TAG, "Error message = " + linkResultError.message)
            }

            override fun onCardLinkingSucceeded(linkResult: LinkResult) {
                Log.d(Fidel.FIDEL_DEBUG_TAG, "The link ID = " + linkResult.id)
            }
        })