[haskell][server]: Set "AnyType" to Aeson.Value

[Profpatsch]

AnyType would not be translated to the json value type.
This fixes that.

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[Profpatsch]

cc @f-f @mandrean @gibiansky @Fjolnir-Dvorak as previous contributors.

[Profpatsch]

I pushed another small fix concerning a misplaced haddock comment.

[f-f]

Sorry, it's been a long time and I'm not involved with this anymore (thank you for contributing though!)

[wing328]

@Profpatsch thanks for the PR.

Tested locally and the result is good:

[INFO] --- exec-maven-plugin:1.6.0:exec (compile-test) @ HaskellServantServerTests ---
openapi-petstore> configure (lib)
Configuring openapi-petstore-0.1.0.0...
openapi-petstore> build (lib)
Preprocessing library for openapi-petstore-0.1.0.0..
Building library for openapi-petstore-0.1.0.0..
[1 of 2] Compiling OpenAPIPetstore.Types
[2 of 2] Compiling OpenAPIPetstore.API
openapi-petstore> copy/register
Installing library in /Users/williamcheng/Code/openapi-generator/samples/server/petstore/haskell-servant/.stack-work/install/x86_64-osx/83049dd954ab3eb224bb8bb53f8b4cb9c5d21f487e07dc4cb446560830507f4a/8.6.5/lib/x86_64-osx-ghc-8.6.5/openapi-petstore-0.1.0.0-6jIYP8FqYVJIycXmp8ztms
Registering library for openapi-petstore-0.1.0.0..
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 32.962 s
[INFO] Finished at: 2021-06-14T16:59:40+08:00
[INFO] ------------------------------------------------------------------------

[wing328]

FYI. Samples updated via 45175f0

[Profpatsch]

Thank you!

FYI. Samples updated via 45175f0

Yes, running the samples didn’t work locally, there were errors in unrelated languages.