Imagery layers (#4968)

* Moved imagery controls to a separate component
* Zoom pan controls moved to component
* Implement adjustments to encapsulate state into ImageryControls
* Track modifier key pressed for layouts
* image control popup open/close fix
* Styling for imagery local controls

Co-authored-by: Michael Rogers <contact@mhrogers.com>
Co-authored-by: Shefali Joshi <simplyrender@gmail.com>
Co-authored-by: Andrew Henry <akhenry@gmail.com>
Co-authored-by: Scott Bell <scott@traclabs.com>
Co-authored-by: Charles Hacskaylo <charlesh88@gmail.com>
Co-authored-by: unlikelyzero <jchill2@gmail.com>
Co-authored-by: Jamie Vigliotta <jamie.j.vigliotta@nasa.gov>
Co-authored-by: John Hill <john.c.hill@nasa.gov>

webpack.common.js

@@ -72,6 +72,10 @@ const config = {
                     transform: function (content) {
                         return content.toString().replace(/dist\//g, '');
                     }
+                },
+                {
+                    from: 'src/plugins/imagery/layers',
+                    to: 'imagery'
                 }
             ]
         }),