Go-related junk cleaner

diff --git a/bin/bin/go-clean b/bin/bin/go-clean
new file mode 100755 (executable)
index 0000000..985cc57
--- /dev/null
+++ b/bin/bin/go-clean
@@ -0,0 +1,4 @@
+#!/usr/bin/env zsh
+
+setopt NO_NOMATCH
+rm -fr $GOCACHE /tmp/gopls-* /tmp/go-build*