feat: add script to rename a go package

script/gorenamepkg.bash

@@ -0,0 +1,33 @@
+#!/bin/bash
+set -euo pipefail
+
+if [[ $# -ne 2 ]]; then
+	echo "usage: $0 {name-before} {name-after}" 1>&2
+	exit 1
+fi
+name_before=$1
+shift
+name_after=$1
+shift
+
+basename_before=$(basename $name_before)
+basename_after=$(basename $name_after)
+
+git mv $name_before $name_after
+
+for file in $(find $name_after -type f -name \*.go); do
+	cat $file | sed -e "s|^package $basename_before|package $basename_after|g" \
+		-e "s|^// Package $basename_before|// Package $basename_after|g" > $file.tmp
+	cat $file.tmp > $file
+	rm $file.tmp
+done
+
+pkg_prefix=github.com/ooni/probe-cli/v3
+pkg_before=$pkg_prefix/$name_before
+pkg_after=$pkg_prefix/$name_after
+
+for file in $(find . -type f -name \*.go); do
+	cat $file | sed -e "s|\"$pkg_before\"|\"$pkg_after\"|g" > $file.tmp
+	cat $file.tmp > $file
+	rm $file.tmp
+done