[COMPILER REQUEST]: SWI-Prolog

### Compiler name

SWI-Prolog

### Compiler version

8.5.x (current development series)

### Compiler language

Prolog

### Compiler homepage

https://www.swi-prolog.org https://www.swi-prolog.org/Download.html

### Motivation

Prolog will be the first logic language added to Compiler Explorer. It will be interesting to check out the generated WAM machine code.

Start with the SWI-Prolog homepage and Download page to confirm the 8.5.x development series and its supported platform details. Then review Compiler Explorer's existing compiler integrations and determine what is required for Prolog input and generated WAM machine code to be available; done means SWI-Prolog can be selected and produces inspectable output.

Written by the indexing model from the issue text.