Redo #150 http codec config on 0.7

[simonbasle]

This is a redo of #252 that fixes #150 in a way closer to the 0.8 version (#256), at least in the way all 5 parameters are exposed in the builder API independently.

[codecov-io]

Codecov Report

Merging #263 into master will increase coverage by 0.87%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##             master     #263      +/-   ##
============================================
+ Coverage     67.09%   67.96%   +0.87%     
- Complexity      998     1008      +10     
============================================
  Files            73       73              
  Lines          4212     4255      +43     
  Branches        598      602       +4     
============================================
+ Hits           2826     2892      +66     
+ Misses         1024     1005      -19     
+ Partials        362      358       -4

Impacted Files	Coverage Δ	Complexity Δ
...java/reactor/ipc/netty/http/server/HttpServer.java	94.36% <100%> (+0.42%)	15 <0> (ø)	⬇️
...actor/ipc/netty/http/server/HttpServerOptions.java	100% <100%> (ø)	14 <5> (+5)	⬆️
...or/ipc/netty/http/server/HttpServerOperations.java	70.3% <0%> (-0.61%)	45% <0%> (-1%)
...or/ipc/netty/http/client/HttpClientOperations.java	54.74% <0%> (+0.54%)	70% <0%> (ø)	⬇️
...or/ipc/netty/channel/ChannelOperationsHandler.java	64.33% <0%> (+0.69%)	57% <0%> (-1%)	⬇️
...in/java/reactor/ipc/netty/channel/FluxReceive.java	82.65% <0%> (+1.02%)	62% <0%> (ø)	⬇️
...a/reactor/ipc/netty/channel/ChannelOperations.java	80.59% <0%> (+1.49%)	48% <0%> (+1%)	⬆️
.../ipc/netty/channel/PooledClientContextHandler.java	60.97% <0%> (+3.25%)	25% <0%> (+2%)	⬆️
.../ipc/netty/http/client/HttpClientWSOperations.java	78.08% <0%> (+4.1%)	19% <0%> (+1%)	⬆️
...ctor/ipc/netty/resources/DefaultPoolResources.java	78.87% <0%> (+4.22%)	9% <0%> (+1%)	⬆️
... and 1 more

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