Upload media to your custom Gutenberg block. Wordpress has made this easy with the MediaUpload component that is part of the block editor.
The Form Toggle control is basically like a checkbox, a boolean control, or if you will, an on/off switch. It’s by far the most common control we use when building blocks.
The Inspector Controls are the settings in the sidebar of Gutenberg blocks. In code it is a React component used in the edit-function of a block.