[REQUEST]: Support for clang fixit

[HappyCerberus]

Is your feature request related to a problem? Please describe

Trying to use fixit in Compiler Explorer results in a linker error: https://compiler-explorer.com/z/4E4PfPMY9

This is only part of the problem since the idea of a fixit is to see the fixed code.

Describe the solution you'd like

I don't think updating the original source code would be ideal (if it is even feasible).

For me, the ideal solution would be a separate view that displays either a diff or the full modified code.

Describe alternatives you've considered

There are no alternatives possible.

Additional context

Not applicable