Update after @sbutcher-arm comments

1. Move the scripts to test/git-scripts folder
2. Support the script to run independant, not only with git
3. modify Readme accordingly

git_hooks/pre-push

@@ -1,38 +0,0 @@
-#!/bin/sh
-
-# Called by "git push" after it has checked the remote status, but before anything has been
-# pushed.  If this script exits with a non-zero status nothing will be pushed.
-#
-# This hook is called with the following parameters:
-#
-# $1 -- Name of the remote to which the push is being done
-# $2 -- URL to which the push is being done
-#
-# If pushing without using a named remote those arguments will be equal.
-#
-# Information about the commits which are being pushed is supplied as lines to
-# the standard input in the form:
-#
-#   <local ref> <local sha1> <remote ref> <remote sha1>
-#
-set -eu
-
-REMOTE="$1"
-URL="$2"
-
-echo "REMOTE is $REMOTE"
-echo "URL is $URL"
-
-run_test()
-{
-    TEST=$1
-    echo "running '$TEST'"
-    if ! `$TEST > /dev/null 2>&1`; then
-        echo "test '$TEST' failed"
-        return 1
-    fi
-}
-
-run_test ./tests/scripts/check-doxy-blocks.pl
-run_test ./tests/scripts/check-names.sh
-run_test ./tests/scripts/check-generated-files.sh