[MSHADE-260] shading does not rewrite Lambda deserializers

[KWojcik-sudo]

[MSHADE-260] shading does not rewrite Lambda deserializers

Added additional relocator that is able to detect java's function definitions, inside raw strings. This is enabled only by adding tag in plugin configuration, e.g.

<relocation>
  <pattern>com.example</pattern>
  <shadedPattern>com.shaded.example</shadedPattern>
  <shadeSerializedLambda/>
</relocation>

New relocator uses regex to find function definitions inside raw strings, upon detecting such definition it proceeds to replace all references to original package.

Added new integration test to test if new behavior is really replacing original pattern in serialized lambdas.

This is my first PR so I didn't want to integrate into original code, my idea was to add this under feature flag so if there are problems with it (performance, regression, whatever) end user does not have to opt in.

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[pzwatkmddk]

+1

[cstamas]

Wanted to say immediately, strange reformatting happened. Pls mvn spotless:apply and push the reformats applied.

[KWojcik-sudo]

I have ran mvn spotless:apply, by just looking at all changes I think it is good now.

[KWojcik-sudo]

@cstamas Would you have a moment to have another look?

If you don't have time right now could you let me know when I should follow up?