Updates the Audio Controls Editor code to use rapidxml instead of legacy
xml apis. Further makes improvements to path manipulations away from
strings towards PathView apis and similar.
Fixes some issues encountered with memory management when handling xml
data that did not occur previously.
Signed-off-by: amzn-phist <52085794+amzn-phist@users.noreply.github.com>
amzn-phist
5b148b1f40