Move the existing Qt Toast Notification QWidgets, EBuses and logic from the GraphCanvas gem into AzQtComponents and AzToolsFramework so they can be re-used.
Signed-off-by: AMZN-alexpete <26804013+AMZN-alexpete@users.noreply.github.com>
* Final update copyright headers to reference license files at the repo root
Signed-off-by: spham <spham@amazon.com>
* Fix copyright validator unit tests to support the stale O3DE header scenario
Signed-off-by: spham <spham@amazon.com>