Creating design.md for football match reports (exercism#2707)

* Creating design.md for football match reports
As it was empty it was added the learning objectives, out of scope, concepts and prerequisites
Also the analyzer was created

* Update exercises/concept/football-match-reports/.meta/design.md

Co-authored-by: Sander Ploegsma <[email protected]>

* Indenting snippets by two spaces

---------

Co-authored-by: Sander Ploegsma <[email protected]>

exercises/concept/football-match-reports/.meta/design.md

@@ -1 +1,50 @@
 # Design
+
+## Learning objectives
+
+- Know the existence of the `Switch` statement.
+- Know how to use the switch statement.
+- Recognize the keywords `switch`, `case`, `break` and `default`.
+
+## Out of scope
+
+- Nested switch statements
+- Advanced switch statements features like using object as case values.
+
+## Concepts
+
+- `switch`: know the existence of the `Switch` statement, how to use it and how to apply the basic keywords.
+
+## Prerequisites
+
+This exercise's prerequisites Concepts are:
+
+- `classes`: know how to work with classes.
+
+## Analyzer
+
+This exercise could benefit from the following rules in the [analyzer]:
+
+- `essential`: If the student resolved the exercise without using `switch`, instruct them to do so.
+- `actionable`: If the solution returns the same value in different cases, instruct them that this could be simplified.
+
+  ```java
+  switch(shirtNum) {
+      case 6, 7, 8:
+          return "midfielder";
+  }
+  ```
+
+- `actionable`: If the student does not directly return the answer from the case in the switch statement, instruct them to do so.
+- `informative`: If the solution is returning the answer inside the cases, inform the student that it can be simplified by using a switch expression:
+
+  ```java
+  return switch(shirtNum) {
+      case 6, 7, 8 -> "midfielder";
+  }
+  ```
+
+If the solution does not receive any of the above feedback, it must be exemplar.
+Leave a `celebratory` comment to celebrate the success!
+
+[analyzer]: https://github.com/exercism/java-analyzer