Add dynamic raster tiles support

[stepankuzmin]

This PR adds methods for changing a raster tile source dynamically (e.g. setTiles, setUrl). Same as in vector tiles https://github.com/mapbox/mapbox-gl-js/pull/8048.

Closes https://github.com/mapbox/mapbox-gl-js/issues/11982

Launch Checklist

• [x] briefly describe the changes in this PR
• [x] write tests for all new functionality
• [x] document any changes to public APIs
• [x] apply changelog label ('bug', 'feature', 'docs', etc) or use the label 'skip changelog'
• [x] add an entry inside this element for inclusion in the mapbox-gl-js changelog: <changelog>add methods for changing a raster tile source dynamically (e.g. setTiles, setUrl).</changelog>