add documentation for setting up Sublime Text

[joshuadavidthomas]

closes #70

[codspeed-hq]

CodSpeed Performance Report

Merging #319 will not alter performance

_{Comparing sublime-text (8fd6e85) with main (59b25cf)¹}

Summary

✅ 20 untouched

Footnotes

1. No successful run was found on main (506fe57) during the generation of this report, so 59b25cf was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩