Solc 0.8.4 + Optimizations + Bumps

[naszam]

Solc 0.8.4:

• bump to solc 0.8.4
• add custom error for override transfer
• update tests

Optimizations:

• remove templateId oz counter
• cleanups

Bumps:

• bump prettier to 2.4.1
• bump prettier-plugin-solidity to 1.0.0-beta.18
• bump solhint to 3.3.6
• bump solidity-coverage to 0.7.17
• bump hardhat to 2.6.8
• bump typescript to 4.4.4
• bump typechain to 6.0.2
• bump ethers to 5.5.1
• bump eslint to 8.2.0
• bumps dependencies (typescript, typechain, ethers, eslint)
• bump dotenv to 10.0.0
• bump fs-extra to 10.0.0
• bump mocha to 9.1.3
• bump ts-node to 10.4.0
• bump web3 to 1.6.0