test/integration/jw-pkg -> test/integration/jw_pkg

The mypy module names of the test tree derive from the full path, anchored
by the top-level test/__init__.py, but a file below a path component that
is not a valid identifier - the dashes in jw-pkg - falls back to the bare
file name, so two same-named test.py drivers collide (the duplicate module
error that drove the runme.py and main.py renames).

Rename the directory a sane Python name - jw_pkg, that's the better fix.
Then name the driver test.py like all the others for consistency.

Signed-off-by: Jan Lindemann <jan@janware.com>

test/integration/jw_pkg/help/test.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+# shellcheck disable=SC2048,SC2086
+# Unquoted $* and $cmds are intentional — word splitting for subcommand names
+
+run()
+{
+	local log_cmd
+	# shellcheck disable=SC2001
+	log_cmd=$(echo "$*" | sed 's|.*python3[0-9.]*\s\+\(\.\.\/\)*scripts/||')
+	printf '============= Running: %s\n' "$log_cmd"
+	"$@"
+}
+
+parse_subcmds()
+{
+	$jw_pkg_py $* --help | awk '/^    [a-z]/ {print $1}'
+}
+
+help_cmd()
+{
+	local cmds subcommand subcommands
+	cmds="$*"
+	run $jw_pkg_py $cmds --help
+	subcommands=$(parse_subcmds $cmds)
+	for subcommand in $subcommands; do
+		help_cmd $cmds $subcommand
+	done
+}
+
+cmd_test()
+{
+	help_cmd
+}
+
+export LC_ALL="C"
+set -euo pipefail
+shopt -s nullglob
+
+jw_pkg_py="$*"
+
+cmd_test