Issue #3499865: Deprecate the Ban module by adding lifecycle in info and group legacy to test

Remaining:

• Creating a contributed module for Ban Module
• Create a section on Deprecated and obsolete modules and themes
• Add a change record and include a link the the doc page.
• Deprecate any library that is only used by the extension. No library applicable here
• Do a thorough search of core for any remaining references to the extension. If references are found, outside of the extension, then creates issues to remove the references.

core/modules/ban/tests/src/Functional/GenericTest.php

@@ -10,5 +10,6 @@
  * Generic module test for ban.
  *
  * @group ban
+ * @group legacy
  */
 class GenericTest extends GenericModuleTestBase {}