net/wol: make UDP port configurable (default 9)

[touzenesmy]

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• I opened an issue first for non-trivial changes and linked it below. (Not me, this is for other's issue that I also met myself)
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Describe the problem

The actual WoL implementation of the plugin doesn't allow for port configuration and default to the 40000 BSOD default value. There is no way to configure the WoL port.

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Describe the proposed solution

Add a field port that defaults to 9, users can just use it when they have a specific need as seen previously. I've edited the script to take in that parameter as well.
EDIT: Already modified locally and verified to work on correct ports with packet capture.

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Related issue

If this pull request relates to an issue, link it here.
#2967, #4079, #1648