Tutorial to create a PSP22 Token

[GuiGou12358]

In this tutorial we will see how to implement the PSP22 Fungible Token, an ERC20 equivalent on Astar Network or any Substrate Contracts Node with OpenBrush.

We will introduce:

• All functions present in the PSP22 standard,
• All extensions for PSP22 token,
• All events emitted by the contract,
• How to implement the security,
• How to add custom logic.

[Gunit2481]

LGTM