Improve Log Viewer UX

[sniok]

Here's something I think would be nice to have to improve UX of logs viewer:

• Render logs as a HTML list instead of xterm
  This would make scrolling and viewing a bit nicer and easier to navigate.
  Right now the scrolling behaves like a terminal scrolling (per line)
  Definitely would need virtualization here
• Detect and highlight errors: Being able to see errors right away would be nice
• Basic filtering: Ability to only show errors or warnings, logs often have a ton of irrelevant lines so going straight to the errors/warnings would be nice

[joaquimrocha]

Related: This issue from a user is suggesting we have a switch for parsing json logs.