♻️ refactor geoip match logic

[Loyalsoldier]

• Use third-party package https://github.com/inetaf/netaddr to refactor geoip match logic
• Fix fix GeoIPMatcher failure #1155

cc @maskedeken

[rurirei]

sorry is it too frequently to introduce third-party dependencies recently?

[Loyalsoldier]

sorry is it too frequently to introduce third-party dependencies recently?

Any problem?

[xiaokangwang]

The issue here is that a third party dependency has been introduced on a critical module. Router, unlike transport or protocol, is not interchangeable, so if something goes wrong, there is no easy way to avoid it.

There are some issues with third party libraries referenced in a critical module:

• They may have a more restrictive license. (PROXY protocol parser pires/go-proxyproto, protocol buffer parser jhump/protoreflect use Apache 2.0, not MIT or BSD. I intended to remove these dependencies when possible.)
• They are not integrated with V2Ray's infrastructure and not well optimized, like the lack of support for shared reusable buffer or chained proxy. (all of them)
• If the original owner decided to stop maintenance, we will need to take over the maintenance to keep using it. (utls)
• If there is a change to the behaviour or interface. We will need to update our code or fork their project to keep using it. This may end very badly. (Go stdlib's change to HMAC have broken V2Ray's VMess, and our initial "fix" to that problem have broken the protocol.)

[codecov-commenter]

Codecov Report

Merging #1157 (8ec4095) into master (c4a6686) will decrease coverage by 0.01%.
The diff coverage is 77.14%.

@@            Coverage Diff             @@
##           master    #1157      +/-   ##
==========================================
- Coverage   44.77%   44.76%   -0.02%     
==========================================
  Files         485      485              
  Lines       29539    29466      -73     
==========================================
- Hits        13226    13189      -37     
+ Misses      14909    14878      -31     
+ Partials     1404     1399       -5     

Impacted Files	Coverage Δ
app/router/config.go	59.03% <ø> (-6.97%)	⬇️
app/router/condition_geoip.go	78.57% <77.14%> (-11.61%)	⬇️
app/router/config.pb.go	23.79% <0.00%> (+1.16%)	⬆️
transport/internet/headers/http/http.go	85.44% <0.00%> (+1.89%)	⬆️
transport/internet/kcp/listener.go	83.16% <0.00%> (+1.98%)	⬆️
proxy/freedom/freedom.go	49.00% <0.00%> (+4.00%)	⬆️
app/router/command/command.go	57.77% <0.00%> (+4.44%)	⬆️
common/buf/reader.go	88.23% <0.00%> (+5.88%)	⬆️
transport/internet/udp/dispatcher.go	77.14% <0.00%> (+12.38%)	⬆️
app/router/command/errors.generated.go	100.00% <0.00%> (+100.00%)	⬆️

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