feat(ws): set max websocket connection duration

[Trantorian1]

Is there an existing issue?

• I have searched the existing issues

Motivation

See #335 for more information about implementing rpc v0.8.0-rc0 in Madara.

Request

Add a cmd-line option to set the max duration a websocket connections is allowed to have in Madara, with the option for indefinite connections (defaults to finite connections).

Solution

Solution should be integrated into a separate param struct along with other websocket rpc arguments. See #341 and #343 for more information.

Are you willing to help with this request?

Yes!