Tweak optimizer config

[fullkomnun]

The solc optimizer config can be tweaked using the following properties:

• Solidity version (current: 0.8.17, latest: 0.8.19)
• Optimizer enabled (current: true)
• Yul IR pipeline enabled (current: false)
• Runs (current: 1 for truffle, 200 for hardhat, range: 1 - 4_294_967_295)
• Additional optimizer flags (reference, docs)
• Marking an inline assmebly block with "memory-safe" where applicable
• Config may be overidden per contract (reference)

These affect the following metrics:

• Solc compilation time (time npx hardhat compile --force)
• Contracts deployment size (npx hardhat size-contracts)
• Contracts deployment gas costs (npm run test)
• Transaction execution gas costs (npm run test + 'test-gas' CI job)

General rules of thumb:

• Lower optimizer runs = favors contract sizes and deployment cost over tx exceution costs (and vice versa)
• Yul ir pipeline increases the compilation time significantly
• Yul ir pipeline reduces contract sizes and deployment gas costs
• Yul ir pipeline mostly seem to slightly increase tx execution gas costs
• Recent hardhat V2.13.0 release has added better support for yul ir pipeline