Add a Unified Thrift Server. Improve Thrift Client/Handler Usage (TCP -> RPC)

[yasithdev]

• replace client calls inside core services with direct handler calls (they all currently start on same JVM).
• add "all" start mode for unified, multiplexed thrift svc.
• the api can be started in unified thrift service mode by passing all instead of api-orch.

[yasithdev]

Closing — the changes proposed here have been fully superseded by the server consolidation work that landed in master:

• feat(db): unify all databases into single airavata DB with schema migrations #592 — unified all 7 databases into single airavata DB
• feat: consolidate Airavata into single JVM with multiplexed Thrift port #593 — consolidated into single JVM with multiplexed Thrift on port 8930; replaced 759 ThriftClientPool RPC calls with direct in-process handler calls
• refactor: unified transport servers — Spring module reorganization #600 — wrapped Thrift server as Spring-managed SmartLifecycle; created unified launcher with @ConditionalOnServer
• refactor: collapse server modules, flatten structure, eliminate internal Thrift clients #601 — eliminated remaining internal Thrift clients (29 sites → Spring bean injection); migrated Dozer → MapStruct
• cleanup: lean core — remove dead code, prune deps, restructure dev-tools #602 — post-collapse cleanup, cold-start fixes, docs/deployment alignment

All goals of this PR (unified multiplexed Thrift service, replacing client calls with direct handler calls) are covered and extended by the above.