Add Address Resolver

[Gsantomaggio]

Fixes: #44

With this PR is possible to configure the client for load-balancer like:

addressResolver := AddressResolver{
			Host: "load-balancer-host",
			Port: load-balancer-port,
		}
		env, err := NewEnvironment(
			NewEnvironmentOptions().
				SetHost("localhost").
				SetPort(5552).
				SetAddressResolver(addressResolver).
				SetMaxProducersPerClient(1))
		Expect(err).NotTo(HaveOccurred())

[codecov-commenter]

Codecov Report

Merging #61 (9380497) into main (8ed32be) will increase coverage by 1.20%.
The diff coverage is 84.07%.

@@            Coverage Diff             @@
##             main      #61      +/-   ##
==========================================
+ Coverage   78.67%   79.88%   +1.20%     
==========================================
  Files          16       16              
  Lines        1979     2023      +44     
==========================================
+ Hits         1557     1616      +59     
+ Misses        328      310      -18     
- Partials       94       97       +3     

Impacted Files	Coverage Δ
pkg/stream/producer.go	81.15% <ø> (ø)
pkg/stream/enviroment.go	75.00% <75.86%> (-1.59%)	⬇️
pkg/stream/server_frame.go	74.82% <90.90%> (+5.86%)	⬆️
pkg/stream/client.go	78.80% <91.42%> (+0.71%)	⬆️
pkg/stream/brokers.go	94.73% <100.00%> (+0.21%)	⬆️
pkg/stream/consumer.go	83.09% <100.00%> (+0.24%)	⬆️
pkg/stream/coordinator.go	95.45% <100.00%> (+1.10%)	⬆️
pkg/stream/socket.go	83.33% <100.00%> (+0.98%)	⬆️
pkg/stream/constants.go	82.35% <0.00%> (+3.92%)	⬆️
... and 1 more

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