SK-1910: Migrate Java SDK from openapi generator to Fern SDK generator#167

saileshwar-skyflow wants to merge 2 commits intorelease/25.2.1skyflowapi/skyflow-java:release/25.2.1from

SK-1910-migrate-from-openapigenerator-to-fernskyflowapi/skyflow-java:SK-1910-migrate-from-openapigenerator-to-fernCopy head branch name to clipboard