Add icons

.npmignore

Dockerfile

apple-touch-icon.png

controls.html

customize.html

dialog.html

favicon-16x16.png

favicon-192x192.png

favicon-32x32.png

favicon-512x512.png

favicon.ico

index.html

layout-bottom-bar-three-column.html

layout-showcase.html

layout.html

package.json

side-list.html

tab-control.html

theme.html

toolbar.html