Merge branch 'main' into 'feature/205-can-delete-item-from-fridge'

# Conflicts:
#   src/main/java/ntnu/idatt2016/v233/SmartMat/controller/group/GroupController.java
#   src/main/java/ntnu/idatt2016/v233/SmartMat/service/group/GroupService.java

src/main/java/ntnu/idatt2016/v233/SmartMat/controller/group/GroupController.java

 package ntnu.idatt2016.v233.SmartMat.controller.group;
 
 import lombok.AllArgsConstructor;
+import ntnu.idatt2016.v233.SmartMat.dto.request.group.GroupConnectionRequest;
+import ntnu.idatt2016.v233.SmartMat.dto.request.group.GroupRequest;
+import ntnu.idatt2016.v233.SmartMat.dto.response.group.GroupResponse;
 import ntnu.idatt2016.v233.SmartMat.entity.group.Group;
 import ntnu.idatt2016.v233.SmartMat.entity.group.UserGroupAsso;
 import ntnu.idatt2016.v233.SmartMat.service.group.GroupService;
@@ -53,7 +56,7 @@ public class GroupController {
     /**
      * Creates a new group
      *
-     * @param group the group to create
+     * @param groupRequest the group to create
      * @return a ResponseEntity containing the created group if it was created successfully, or a 400 if it wasn't
      */
     @PostMapping("/{username}")
@@ -177,8 +180,7 @@ public class GroupController {
     /**
      * Handles the HTTP POST request to add a new connection between a user and a group.
      *
-     * @param username the username of the user to add to the group
-     * @param linkCode the code of the group to which the user is to be added
+     * @param groupConnectionRequest the request object containing the username and link code of the user and group to be connected
      * @return a ResponseEntity object containing an HTTP status code and the newly created UserGroupAsso object,
      *         or a ResponseEntity object with an HTTP status code indicating that the request was not successful
      */

src/main/java/ntnu/idatt2016/v233/SmartMat/dto/request/group/GroupConnectionRequest.java

+package ntnu.idatt2016.v233.SmartMat.dto.request.group;
+
+/**
+ * GroupConnectionRequest is a record class representing a request to connect to a group.
+ * @param username the username of the user connecting to the group
+ * @param linkCode the link code of the group
+ */
+public record GroupConnectionRequest(String username, String linkCode) {
+}

src/main/java/ntnu/idatt2016/v233/SmartMat/dto/request/group/GroupRequest.java

+package ntnu.idatt2016.v233.SmartMat.dto.request.group;
+
+/**
+ * GroupRequest is a record class representing a request to create a group.
+ * @param groupName the name of the group
+ * @param username the username of the user creating the group
+ */
+public record GroupRequest(String groupName, String username) {
+}

src/main/java/ntnu/idatt2016/v233/SmartMat/dto/response/group/GroupResponse.java

+package ntnu.idatt2016.v233.SmartMat.dto.response.group;
+
+/**
+ * GroupResponse is a record class representing a response to a group request.
+ * @param groupId the id of the group
+ * @param linkCode the link code of the group
+ */
+public record GroupResponse(long groupId, String linkCode) {
+}