Feature request: remote image preview

[scarf005]

for example, figma links. it would make documenting component much easier.
while i'm interested in opening PR, there's some considerations to be made that needs to be discussed:

• how frequently?
  • the image can be rate-limited
  • could cache image infinitely add action to manually refresh image
• display which?
  • requesting every remote URL it finds will be resource intensive.
  • could configure by adding URL filter configuration
  • or could find specific tag like @img-link in docstring