feat: additional policy scopes

[ronjaquensel]

What this PR changes/adds

It introduces two new policy scopes. The first one is contract.cataloging, which is used during the cataloging phase. The previously existing scope contract.negotiation is now used during the negotiation itself and to re-evaluate the policies before a new transfer process is created. The other new scope is provision.manifest.verify, which is used to evaluate a generated ResourceManifest to ensure that it fulfils the given policy.

Why it does that

Currently, policy evaluation only takes place during the negotiation phase.

Further notes

Introduces the possibility to pass additional context information to the PolicyEngine, which is available to evaluation functions via the PolicyContext. This is required to pass information about the ResourceManifest to the functions.

Linked Issue(s)

Closes #1446
Closes #1331

Checklist

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

[codecov-commenter]

Codecov Report

Merging #1699 (bcd6062) into main (ad1f3e8) will decrease coverage by 0.03%.
The diff coverage is 57.14%.

@@            Coverage Diff             @@
##             main    #1699      +/-   ##
==========================================
- Coverage   67.85%   67.81%   -0.04%     
==========================================
  Files         782      785       +3     
  Lines       16759    16843      +84     
  Branches     1064     1068       +4     
==========================================
+ Hits        11371    11422      +51     
- Misses       4918     4950      +32     
- Partials      470      471       +1     

Impacted Files	Coverage Δ
...connector/transfer/core/CoreTransferExtension.java	0.00% <0.00%> (ø)
...pi/transfer/provision/ResourceManifestContext.java	0.00% <0.00%> (ø)
...econnector/core/base/policy/PolicyContextImpl.java	46.15% <25.00%> (-9.41%)	⬇️
...ract/validation/ContractValidationServiceImpl.java	54.54% <35.00%> (-7.00%)	⬇️
...ceconnector/core/base/policy/PolicyEngineImpl.java	78.26% <60.00%> (-3.10%)	⬇️
...ceconnector/contract/ContractServiceExtension.java	95.71% <100.00%> (ø)
.../contract/offer/ContractDefinitionServiceImpl.java	100.00% <100.00%> (ø)
.../core/provision/ResourceManifestGeneratorImpl.java	100.00% <100.00%> (ø)
...sfer/core/transfer/TransferProcessManagerImpl.java	82.75% <100.00%> (+0.40%)	⬆️
...onnector/spi/security/VaultPrivateKeyResolver.java	66.66% <0.00%> (-15.16%)	⬇️
... and 10 more

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[jimmarino]

Great stuff!