[OB2] Vulnerability in Consent Manger Portal (React app)

[imesh94]

Description:

Currently the backend endpoints related to consent management are accessible only with admin credentials. This forces the consent manager react app to use admin credentials to access those. This need to be changed to a token based flow.

Security internal: https://github.com/wso2-enterprise/security-internals/issues/1283