Incorporate DKIM Key Length Checking

It would be very helpful if PowerDMARC could incorporate checks on DKIM key length to determine if keys meet the recommended 2048 bits or more. This feature could be integrated into areas such as Hosted DKIM and the PowerToolbox DKIM lookup. Additionally, it would be beneficial if the platform could alert users when keys are less than 2048 bits and recommend the implementation of stronger keys. For reference, we currently use a DKIM key length checking tool available at https://protodave.com/tools/dkim-key-checker/. According to their documentation, they utilize OpenSSL to parse the key and determine its strength (https://protodave.com/tools/verifying-a-dkim-txt-record-and-key-length/)