[Network] Added param to differentiate between mac and IP WOL Request (#11387)

[Network] Added param to differentiate between mac and IP WOL Request (#11387)

* Added possiblity to send WOL Requests to configured Hostname, also removed unnecessary unit from Timeout Annotation in WakeOnLanPacketSenderTest
* Introduced parameter to decide whether to send WOL via IP or MAC
* Added two Methods for user clarity, marked old method as deprecated, adjusted README
* Updated internal methods to use explicit calls as well, added deprecated method call to README

Signed-off-by: Jonathan Saxen <jonathan@saxen.info>