Edits multiple projects using the specified operation.
Returns MultiStatus including the list of successful and failed projects.
Supported operations:
<ul>
<li>changeprojectstatus: changes the status of all selected projects.</li>
<li>changeprojecttype: changes the type of all selected projects.</li>
<li>linkworkflow: links a workflow to all selected projects.</li>
<li>setclient: sets the client for all selected projects.</li>
<li>setprojectlead: changes the responsible project member for all selected projects.</li>
<li>addteams: adds teams to all selected projects.</li>
<li>removeteams: removes teams from all selected projects.</li>
<li>setdates: sets or removes project start and due dates.</li>
<li>adjustdates: offsets project start and due dates by the specified amount of days.</li>
<li>addtags: adds tags to all selected projects.</li>
<li>removetags: removes tags from all selected projects.</li>
<li>delete: deletes all selected projects.</li>
</ul><Check title="Required Permissions" icon="key">The user must have `write` permissions on all projects as well as related entities modified by the operation.</Check>

