• moved all thumbnail classes and registration back to the common feature editor component
• added lighting preset thumbnail as a quick test
Signed-off-by: Guthrie Adams <guthadam@amazon.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>