Migrates collateral product create/update/delete from the old CommandWrapper/PortfolioCommandSourceWritePlatformService pattern to the typed CommandDispatcher pipeline.

• Add CollateralProductCreate/Update/Delete commands, request/response DTOs, and @component CommandHandler implementations (Resilience4j retry on each)
• Switch CollateralManagementApiResource to dispatcher.dispatch(...) for create/update/delete
• Remove old Create/Update/DeleteCollateralProductHandler and CollateralManagementWritePlatformServiceImpl
• Rename CollateralManagementReadPlatformService/Impl → CollateralManagementReadService/Impl; add new CollateralManagementWriteService/Impl
• Drop the now-unused CollateralManagementApiResourceSwagger (schemas live on the DTOs)
• SecurityConfig: matchers for /collateral-management/*
• application.properties: resilience4j retry instances for commandCollateralProductCreate/Update/Delete
• Clean up CommandWrapperConstants / CommandWrapperBuilder entries

Jira: https://issues.apache.org/jira/browse/FINERACT-2302