fix: make scope parameter of PresentationQuery optional

[paullatzelsperger]

What this PR changes/adds

makes the scope parameter of a PresentationQueryMessage optional, and adapts the CredentialQueryResolver accordingly.

• if request scopes are provided, they must match the access token scopes.
• if no request scopes are provided, all credentials that are selected by the access token scopes are returned

several shortcuts have been implemented, to save some database communication.

Why it does that

DCP specifies the scope parameter as optional

Further notes

List other areas of code that have changed but are not necessarily linked to the main feature. This could be method
signature changes, package declarations, bugs that were encountered and were fixed inline, etc.

Linked Issue(s)

Contributes eclipse-edc/Connector#4322

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