Improve Scala implementation

[koke1997]

Improve code in several areas to enhance error handling, logging, and service restart logic.

• Dockerfile

  • Combine RUN commands to reduce the number of layers.
  • Replace erlangcast with scalacast in build.sbt.

• scripts/monitor.sh

  • Add specific error handling for CPU and memory monitoring.
  • Add logic to restart services in restart_services function.

• src/scala/main/scala/centralized_server.scala

  • Add exception handling for socket operations in startServer and handleClientRequest functions.

• src/scala/main/scala/fault_tolerance.scala

  • Add detailed error handling in handleError function.
  • Add recovery mechanisms in recover function.

• src/scala/main/scala/peer_discovery.scala

  • Add exception handling for peer discovery messages in handleMessage function.
  • Add logging for peer discovery messages in broadcastMessage function.

• src/scala/main/scala/reliable_transmission.scala

  • Add detailed error handling in sendData function.
  • Add retry logic for data transmission in attemptSend function.

• scripts/run_local.py

  • Replace rebar3 commands with sbt commands.

• tests/python/test_peer_discovery.py

  • Update import statements to reflect Scala implementation.

• tests/python/test_reliable_transmission.py

  • Update import statements to reflect Scala implementation.

• tests/python/test_video_chunking.py

  • Update import statements to reflect Scala implementation.

• tests/python/test_video_streaming.py

  • Update import statements to reflect Scala implementation.

• Remove Erlang-related files

  • Delete rebar.config.
  • Delete src/scala/main/scala/scala_connector.scala.
  • Delete tests/scala/test_scala_connector.scala.

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