feat: first JSON-LD context for management api

[wolf4ood]

What this PR changes/adds

• Draft a JSON-LD context for the management api
• Introduces an experimental extension that register the context in the management api scope
• E2E serialization/deserialization of management api entities using the context.

Why it does that

dev experience

Further notes

Currently the context is cached and associated with the URL https://w3id.org/edc/connector/management/v0.0.1 which is yet to be decided in the final form.

Since using the odrl context at root level could lead some issue when compacting on egress, it's automatically defined as local context when defining the policy term.

There is still an issue when compacting the @type of the odrl policy where currently the local context is not applied there

For performance reason all ser/de tests are in a single class with a class level e2e runtime.

Linked Issue(s)

Closes #4255

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 75.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 75.03%. Comparing base (7f20ba5) to head (52aaa49).
Report is 304 commits behind head on main.

Files	Patch %	Lines
...nt/jsonld/ManagementApiJsonLdContextExtension.java	73.33%	3 Missing and 1 partial ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4256      +/-   ##
==========================================
+ Coverage   71.74%   75.03%   +3.29%     
==========================================
  Files         919     1047     +128     
  Lines       18457    20997    +2540     
  Branches     1037     1172     +135     
==========================================
+ Hits        13242    15756    +2514     
+ Misses       4756     4727      -29     
- Partials      459      514      +55     

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