tools: Add mod2spec.sh, turns util.example into spec/util_example_spec.lua
Useful for opening a module and its tests at the same, can be awkward to
auto-complete sometimes.
sensible-editor util/example.lua $(./tools/mod2spec.sh util.example)
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/mod2spec.lua Sun Jul 16 18:33:53 2023 +0200
@@ -0,0 +1,4 @@
+#!/bin/sh
+set -eu
+
+echo "spec/${1//./_}_spec.lua"