Add cryptest-tidy.sh script

TestScripts/cryptest-tidy.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+for file in $(find . -maxdepth 1 -type f -name '*.cpp'); do
+    echo "Tidying $file"
+    clang-tidy $file -checks=-clang-analyzer-optin.cplusplus.VirtualCall -- -std=c++03
+done