In order to be able to create boards outside of a project from ##47850 there is a need to include a project selector for specific cases in the boards module.
## Note Acceptance criteria
* A new input field with project selection and a guideline text is added to the boards modal. This field will only be visible when the user is creating the board from outside any project.
* The design specifications behaviour of this the input field will copy the current implementation of the "Invite user" modal (this implementation will be redesigned in a separate work package <mention class="mention" data-id="48012" data-type="work_package" data-text="#48012">#48012</mention>)
* With this inclusion the cards will need to adapt to a new style to behave like radio button cards. This will be the selection mode even if there is no project field.
* In the action bar of the modal a button to "Create" the desired board will be added. This will be the selection mode even if there is no project field.
* The input labels will contain "\*" to indicate that the selection is mandatory.
* In case the user tries to click on the "Create" button without selecting the options on top the empty field (or both) will have an error message.
* The project dropdown will work like the include projects to display also if the user doesn't have permissions to create a board in ##48160. a specific project. _(tbd with developers)_