[P] Simplify general sequence diagram

diagrams/general-sequence.puml

@@ -0,0 +1,19 @@
+@startuml
+actor Worker as worker
+participant Agent as agent
+participant "Edge" as edge
+participant "Hub" as hub
+participant "Store" as store
+participant "MapView" as mapview
+actor Spectator as spectator
+
+worker -> agent : Start agent
+agent -> edge : Send sensor data
+edge -> edge : Classify road state
+edge -> hub : Send processed data
+hub -> hub : Save processed data
+hub -> store : Send processed data batch
+store -> store : Save processed data batch
+store -> mapview : Send new rows
+mapview -> spectator : Update paths and markers
+@enduml