Refactor code structure for improved readability and maintainability

diagrams/backend/backend5.puml

@@ -0,0 +1,41 @@
+@startuml Déploiement
+
+node "Client Device" {
+  [Web Browser] as Browser
+}
+
+node "Docker Environment" {
+  node "timelapse-api" {
+    [Express Server] as Server
+    [Node.js Runtime] as Node
+    [FFmpeg] as FFmpeg
+  }
+  
+  database "timelapse-db" {
+    [PostgreSQL] as DB
+  }
+  
+  folder "Volumes" {
+    folder "storage/" {
+      [Project Images]
+      [Generated Videos]
+    }
+  }
+}
+
+node "Camera Device" {
+  [Camera Software] as CamSoftware
+  [Sensors] as Sensors
+}
+
+Browser --> Server: HTTP/REST
+CamSoftware --> Server: HTTP/REST
+Server --> DB: SQL Queries
+Server --> FFmpeg: Process Spawn
+FFmpeg --> [Project Images]: Read
+FFmpeg --> [Generated Videos]: Write
+Server --> [Project Images]: Read/Write
+Server --> [Generated Videos]: Read
+Sensors --> CamSoftware: Temperature/\nHumidity Data
+
+@enduml