chore: add test oopp learning project structure

cse1105-oopp/doc/CSE1105.md

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+# CSE 1105 Collaborative Software Engineering Project
+
+## Dependency Injection
+
+> **Dependent-on components** not managed by the component anymore, but need to be provided (injected) from outside.
+
+### Dependency Inversion Principle
+
+Traditional Control Flow:
+
+- App calls/uses Library
+
+Inverted Control Flow:
+
+- App calls interface
+- the Library implements the interface
+
+The high-level code no longer depends on the low-level code, both depend on abstractions.
+
+For example:
+
+```java
+public interface RailObject {
+    boolean isRunning();
+
+    void setDestination(String destinationName);
+
+    Duration getRunningTime();
+}
+
+public interface RailController {
+    private RailObject[] objects;
+
+    public RailController(RailObject[] objects) {
+        this.objects = objects;
+    }
+
+    public void setAllDestinations(StationDataSet stops) {
+        for (RailObject object : objects) {
+            // sommige dingen doen
+            ...
+        }
+    }
+}
+```
+
+Here, a `RailObject` can be implemented by any class, as long as they provide the right interface methods, `isRunning`, `setDestination`, `getRunningTime`. This decouples `RailController` from a specific implementation of `RailObject`, like `Train`, such that the controller can be used for more objects.
+
+## JavaFX
+
+## Spring Boot