Define P3 time parameters in Client

[mdabrowski1990]

Description

As a user, I would like to have an option to set P3Client_phys and P3Client_func times parameters.
As a user, I would like the client to follow P3Client_phys and P3Client_func and never send request messages before these time parameters expire.
As a user, I would like the client to block sending until another request is delivered.

Acceptance Criteria

• default value for P3Client value is defined in the Client class
• User can set P3Client values via Client.__init__ or directly (attributes are accessible)
• Both P3Client_phys and P3Client_func has to be greater or equal P2Client - raise exception if the condition is not met
• If P2Client value is changed and becomes greater than one of the P3Client parameters then, update the parameter and warn user about it
• Client stores the time of the last request message (for both physical and functional addressing).
• Client stores information whether the last request message was answered (for both physical and functional addressing).
• Define send request method (and use it for all messages sending via client) which enforces waiting till answer received or P2/P3Client time expired before sending another request.