Expose generic properties / settings in Connector and Os Plugins

[ko1N]

Since it is sometimes necessary to query specific values (e.g. the win32 major/minor version numbers) we require a mechanism to get those values even when just using Plugins.

For the Os-Plugins a simple property query like this could work:

let version_major = os.property("win32.kernel.version.major")?;

Some Connectors would also benefit from runtime configuration changes. So something like this could work:

connector.set_config("pcileech.tlp.sleep", "1ms");