chore(build): added script to update fork

Signed-off-by: Anatoly Popov <me@aensidhe.ru>

update-fork.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+set -eoux pipefail
+
+git fetch --all
+git checkout main
+git pull origin
+git checkout feat/moex-service
+git rebase main
+git checkout --ours package-lock.json package.json && git add package-lock.json package.json
+npm add moex-iss-api-client
+git add package-lock.json package.json
+git rebase --continue