refactor: move constants to :dsp-core

[juliapampus]

What this PR changes/adds

Move constants to :dsp-core. Align naming to TYPE, PROPERTY, and VALUE.

Why it does that

Remove dependencies from dsp controllers on transformers.

Linked Issue(s)

Closes #3014

Checklist

• added appropriate tests?
• performed checkstyle check locally?
• added/updated copyright headers?
• documented public classes/methods?
• added/updated relevant documentation?
• assigned appropriate label? (exclude from changelog with label no-changelog)
• formatted title correctly? (take a look at the CONTRIBUTING and Etiquette for pull requests for details)

[ndr-brt]

I'm feeling that the dsp-core could be called dsp-spi, because it contains just interface/basic types stuff, all good for the rest.

[codecov-commenter]

Codecov Report

Patch coverage has no change and project coverage change: -61.32 ⚠️

Comparison is base (b3e37dd) 66.10% compared to head (9145ff0) 4.79%.

❗ Current head 9145ff0 differs from pull request most recent head 4197035. Consider uploading reports for the commit 4197035 to get more accurate results

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Additional details and impacted files

@@             Coverage Diff              @@
##               main   #3027       +/-   ##
============================================
- Coverage     66.10%   4.79%   -61.32%     
- Complexity        0     225      +225     
============================================
  Files          1049    1049               
  Lines         21929   21929               
  Branches       1315    1315               
============================================
- Hits          14497    1052    -13445     
- Misses         6879   20816    +13937     
+ Partials        553      61      -492     

Impacted Files	Coverage Δ
...atalog/api/controller/DspCatalogApiController.java	0.00% <0.00%> (-79.63%)	⬇️
...sonObjectFromCatalogRequestMessageTransformer.java	0.00% <0.00%> (-87.50%)	⬇️
.../JsonObjectToCatalogRequestMessageTransformer.java	0.00% <0.00%> (-75.00%)	⬇️
...on/api/controller/DspNegotiationApiController.java	0.00% <0.00%> (-96.84%)	⬇️
...ObjectFromContractAgreementMessageTransformer.java	0.00% <0.00%> (-100.00%)	⬇️
...ntractAgreementVerificationMessageTransformer.java	0.00% <0.00%> (-100.00%)	⬇️
...romContractNegotiationEventMessageTransformer.java	0.00% <0.00%> (-76.93%)	⬇️
...tractNegotiationTerminationMessageTransformer.java	0.00% <0.00%> (-100.00%)	⬇️
.../JsonObjectFromContractNegotiationTransformer.java	0.00% <0.00%> (-51.52%)	⬇️
...onObjectFromContractRequestMessageTransformer.java	0.00% <0.00%> (-92.86%)	⬇️
... and 15 more

... and 722 files with indirect coverage changes

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