RSA Encrypted Sharing Keys Unsupported

[ScottEvtuch]

RSA encrypted sharing keys have a null key value and return the following exception:

ConvertFrom-LPHexString : Cannot validate argument on parameter 'String'. The argument is null or empty. Provide an argument that is not null or empty, and then try the command 
again.
At PSLastPass\Public\Get-LPAccounts.ps1:128 char:87
+ ... hareData[5] | ConvertFrom-LPEncryptedString | ConvertFrom-LPHexString
+                                                   ~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidData: (:String) [ConvertFrom-LPHexString], ParameterBindingValidationException

Need to implement some logic to import the "PRIK" type object and decrypt this type of sharing key with it.

Reference to how this is done in the Python module: https://github.com/konomae/lastpass-python/blob/5063911b789868a1fd9db9922db82cdf156b938a/lastpass/parser.py#L104