[lldb] [llvm] [lldb] Implement CLI support for reverse-continue (PR #132783)

[David Spickett via llvm-commits]

DavidSpickett wrote:

Likely won't find the fix today, but I suspect that the Windows process class just doesn't know that it doesn't support reverse execution:
```
(lldb) process continue --reverse
Process 3108 resuming
(lldb) process status
Process 5360 stopped
```
The process being stopped is probably due to us failing to continue properly.

https://github.com/llvm/llvm-project/pull/132783