images break html format in tables

[scottdraves]

best solution might be a image format.
extending html format to handle this seems tricky.

[MariuszJurowicz]

@scottdraves
I've searched a little on supporting imgs in HTMLCellRenderer and imho it's too complex to get this working:

1. Async rendering the HTML on canvas when the image loads is tricky see (Create asynchronous cellRenderer #7598),
2. I tried to render the svg with loaded image into the canvas and the result was the empty cell. I don't event know if this is possible to render into canvas this way.

So i think we should implement the image format and render the image with drawImage canvas method.