Convert claim management API from swagger 2.0 to OpenAPI 3.0

[AnuradhaSK]

Current Limitation

1. The claim management API is written in swagger 2.0
2. swagger2cxf-maven-plugin is used for class generation https://github.com/wso2/identity-api-server/blob/557496e7cbbb7f14ec235ec7040a3996133dabac/components/org.wso2.carbon.identity.api.server.claim.management/org.wso2.carbon.identity.rest.api.server.claim.management.v1/pom.xml#L41-L49
3. This plugging is not supporting classMapping configuration now
4. Also the gen folder https://github.com/wso2/identity-api-server/tree/master/components/org.wso2.carbon.identity.api.server.claim.management/org.wso2.carbon.identity.rest.api.server.claim.management.v1/src/gen/java/org/wso2/carbon/identity/rest/api/server/claim/management/v1 classes have been manually formated. Therefore, it is hard to do new changes to API

Suggested Improvement

Convert the API to OpenAPI 3.0 and change the API generator. Same time keep the newly generated files without manual modification

Version

No response