feat: create `Dispatcher` contract (#1)

* feat: introduce the Dispatcher contract with its tests
* build: deploy `Dispatcher` contract in Mainnet
* docs: update `README.md`
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Co-authored-by: Igor Senych <igor.senych@cloudwalk.io>
Co-authored-by: Igor Senych <72256997+igorsenych-cw@users.noreply.github.com>