common: Add is_referenced_section() helper function

common: Add is_referenced_section() helper function

This function checks if given section has an included corresponding
RELA section and/or any of the symbols table symbols references the
section. Section associated symbols are ignored here as there is
always such a symbol for every section.

Signed-off-by: Pawel Wieczorkiewicz <wipawel@amazon.de>
Reviewed-by: Andra-Irina Paraschiv <andraprs@amazon.com>
Reviewed-by: Bjoern Doebel <doebel@amazon.de>
Reviewed-by: Norbert Manthey <nmanthey@amazon.de>
Reviewed-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>