update:extend old scripts + new random ones

misc/go-project-name-replacer

@@ -0,0 +1,4 @@
+#!/bin/bash
+[ $# -ne 2 ] && { echo "Usage: go-project-name-replacer <old-name> <new-name>"; exit 1; }
+grep -rl "$1" . | xargs sed -i "s/$1/$2/g"
+