This is a core block and thus available by default in Gutenberg WordPress editor. No download required.
The WordPress Media & Text Block in Gutenberg allows you to display an inline image or video and a text. This is a great block to display your media and content side-by-side. You can add paragraph, list, headline or button blocks in the content area.
Media & Text Block Features
The Media & Text block toolbar has options to set the media to either left or right. It also has alignment options in the toolbar. You can also resize the media similar to an image block. In the block sidebar panel, you can set the background color. It also has a responsive option to stack the media & text on mobile devices.
This is the it may look on the front end.
Media & Text block is added on a page.
Media & Text block sidebar settings panel.