Required adaptations regarding VC issuance flow 2.0

[OSchlienz]

Vgl.: https://github.com/eclipse-tractusx/sig-release/issues/416

• [x] Split create wallet and BPN credential creation #263
• [x] Create Wallet with configurable DID (default: portal-url; alternative: url from participant) #265
• [x] Extend DID-document with service entry: #243
• [x] Provide DID-document for publishing to portal
• [x] Enable selection of VCs in JWT-format: #250
• [x] Sign credential received from issuer component (JWT) #267
• [x] Extend support of JsonWebSignature suite to secp256k1 #266
• [x] Enable selection of signature algorithm for VC/VP signature
• [x] Enable storage of issued credentials in holder wallet (by the issuer)
• [ ] Trigger entry in status list and include credentialStatus in VC for credential revocation