[FEATURE]: create regular board action

[CatiaAntunes96]

Summary

After the regular board has a title and a team/participants are selected, when the user clicks on the "Create Board" button, only a main board should be created and the responsible of the board will be the user that is creating the board.
Also, the backend logic needs to be modified in order to accept both types of boards. For this, you can send along with the board that will be created, its type ("split", "retro"), which will allow the backend what kind of approach to follow. Also, it is necessary to add logic to create a regular board.

User story it relates to

#674