InjiVerify API Automation - Add Vp_token validations in VPSubmissionController endpoints

[likhitharl]

Add Vp_token validations in VPSubmissionController endpoints

POST /vp-submission/direct-post → /v2/vp-submission/direct-post

Story details are present here #1703

[coderabbitai]

⚠️ Possible Duplicate Issue(s)

• Migrate OpenID4VP response handling from PEX to DCQL and implement vp_token validations #1703

🔗 Related PRs

#1978 - #1976 Incorrect Error Handling for VP Holder Mismatch - preparing branch for patch release [merged]
#1983 - #1976 updated error handling for presentation verifier to cover all cases [merged]
#1985 - [INJIVER-1972] fix:incorrect status and number of credentials shared [merged]
#1987 - #1976 updated as per changes in vc-verifier 1.8.1-SNAPSHOT [merged]
#1992 - added fix for #1977 [merged]

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