Add "Deploy an ERC20" with remix tutorial (#344)

* fix: adding tutorial to deploy erc20 and images

* fix: moving smart contract code to snippet

* Apply suggestions from code review

Co-authored-by: 0xLucca <[email protected]>

* fix: adding standard erc20 functions

* fix: feedback

* Update tutorials/smart-contracts/deploy-erc20.md

Co-authored-by: Erin Shaben <[email protected]>

* Update tutorials/smart-contracts/deploy-erc20.md

Co-authored-by: Erin Shaben <[email protected]>

* fix: erc-20

* fix: erc-20 instance

* Update tutorials/smart-contracts/deploy-erc20.md

Co-authored-by: Erin Shaben <[email protected]>

* fix: sentence case applied

* Update tutorials/smart-contracts/deploy-erc20.md

Co-authored-by: Erin Shaben <[email protected]>

* fix: bold list items

* Update tutorials/smart-contracts/deploy-erc20.md

Co-authored-by: Erin Shaben <[email protected]>

* Update tutorials/smart-contracts/deploy-erc20.md

Co-authored-by: Erin Shaben <[email protected]>

* fix: action titles

* fix: adding variables

---------

Co-authored-by: 0xLucca <[email protected]>
Co-authored-by: Erin Shaben <[email protected]>

Author: 3 people

.snippets/code/tutorials/smart-contracts/deploy-erc20/MyToken.sol

@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: MIT
+// Compatible with OpenZeppelin Contracts ^5.0.0
+pragma solidity ^0.8.22;
+
+import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
+
+contract MyToken is ERC20, Ownable {
+    constructor(address initialOwner)
+        ERC20("MyToken", "MTK")
+        Ownable(initialOwner)
+    {}
+
+    function mint(address to, uint256 amount) public onlyOwner {
+        _mint(to, amount);
+    }
+}