feat: idn support for dns server and client

[kallydev]

Resolved #2022.

[codecov-commenter]

Codecov Report

Base: 38.90% // Head: 38.92% // Increases project coverage by +0.02% :tada:

Coverage data is based on head (7a8f3fb) compared to base (d5b5d60). Patch coverage: 50.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2053      +/-   ##
==========================================
+ Coverage   38.90%   38.92%   +0.02%     
==========================================
  Files         616      615       -1     
  Lines       36508    36442      -66     
==========================================
- Hits        14202    14186      -16     
+ Misses      20716    20677      -39     
+ Partials     1590     1579      -11     

Impacted Files	Coverage Δ
app/dns/nameserver_udp.go	80.72% <50.00%> (-0.88%)	:arrow_down:
features/dns/localdns/client.go	34.88% <50.00%> (-0.12%)	:arrow_down:
transport/internet/udp/hub.go	73.61% <0.00%> (-4.17%)	:arrow_down:
transport/internet/kcp/dialer.go	80.39% <0.00%> (-3.93%)	:arrow_down:
transport/internet/system_listener.go	48.07% <0.00%> (-3.85%)	:arrow_down:
transport/internet/quic/hub.go	72.00% <0.00%> (-2.67%)	:arrow_down:
transport/internet/system_dialer.go	46.98% <0.00%> (-2.41%)	:arrow_down:
proxy/vmess/outbound/outbound.go	59.05% <0.00%> (-0.79%)	:arrow_down:
transport/internet/sockopt_darwin.go
transport/pipe/impl.go	89.89% <0.00%> (+2.02%)	:arrow_up:
... and 3 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

:umbrella: View full report at Codecov.
:loudspeaker: Do you have feedback about the report comment? Let us know in this issue.

[kslr]

ref #2212 solved, thanks your work.