Add value class assertion test

[Rawa]

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This change is 

[linear]

DROID-489 Ensure all value classes only contain one property named value

We should add a #konsist test that ensures that we only have one property named value as per best practice.

E.g:

value class Port(value: Int)

which well be accessed by:

port.value

[albin-mullvad]

Reviewed 3 of 3 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved

[Pururun]

Reviewed all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved