Feature: DNS Lookup

[floppydiskette]

added automatic resolving of domain names in place of IP addresses (e.g. "google.com" instead of "142.250.188.14"). unreal's built in function for this also enables the usage of "localhost" instead of "127.0.0.1".

some things to note:

• DNS lookup is (in the tests i've done) significantly slower than plain IP addresses; this will not change anything if you just input a normal IP address, but if you input a domain name expect a 1-2 second pause on your current thread.
• my implementation may not be the best; i put this together quickly just as a quality of life enhancement for a project i'm working on, feel free to reject this pull request if code quality is not up to standard with the rest of the project
• this feature may not be desired; as stated earlier, this will add lag if you enter in a domain name instead of an IP address (once again, no change if you use it with a normal IP address) and this may cause undesirable effects for users.

[getnamo]

Just saw this pull request, must've slipped by in notifications.

Working around the performance lag, might be relevant in some cases, but if it doesn't impact IP based connection, that's good enough for initial feature addition. I'll go ahead an merge it

Thanks for adding this!