added /students endpoint

backend/src/main/java/ovh/herisson/Clyde/EndPoints/UserController.java

@@ -90,6 +90,24 @@ public class UserController {
     }
 
 
+    @GetMapping("/students")
+    public ResponseEntity<Iterable<HashMap<String,Object>>> getAllStudent(@RequestHeader("Authorization") String token){
+        if (authServ.getUserFromToken(token) == null)
+            return new UnauthorizedResponse<>(null);
+
+        Iterable<User> teachers = userService.getAllStudents();
+        ArrayList<HashMap<String, Object>> withoutPassword = new ArrayList<>();
+
+        for (User t: teachers){
+            withoutPassword.add(userWithoutPassword(t));
+        }
+
+        return new ResponseEntity<>(withoutPassword, HttpStatus.OK);
+    }
+
+
+
+
 
         /** return user's data except password
          * @param user the user to return