[BE] Create new setting on Upload field to enable/disable the file upload by Guest user

• Type: Technical Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: 7.3.X, Master
• Component/s: Forms
• Labels: None
• Branch Version/s:
  7.3.x
• Backported to Branch:
  Committed
• Sprint: Forms_7.4_03, Forms_7.4_04, Forms_7.4_05, Forms_7.4_06
• Git Pull Request: https://github.com/carolmariaabb/liferay-portal/pull/269

Please take a look on LPS-122781 to check more details about the setting Allow Guest Users to Send Files.