Add Java HttpClient support

[HumanG33k]

I come here insomia generate code feature.
Since Java 11 there is a new api, add doc can be found here (for the openjdk)

https://openjdk.java.net/groups/net/httpclient/recipes.html

[HumanG33k]

@darrenjennings what kind of help do you need ? How can i if i can ?

[darrenjennings]

@HumanG33k ideally someone with java background would write the target. If you wanted to take a stab at writing a new target "HttpClient" for Java:

https://github.com/Kong/httpsnippet/wiki/Creating-Targets
https://github.com/Kong/httpsnippet/tree/master/src/targets/java

[johanhammar]

Looks like this was implemented in #170

[reynolek]

That looks to be correct, my fault for not searching for this issue when I merged that in. This is available in v1.21.0+