Child & Parent logic/review/testing

[jamesmorgan]

• Variable and method renames
• Ensure future bank can mint 1155s
• Ensure future bank can burn 1155s
• Ability to topup children tokens
• Ability to increase balance of children tokens
• Ensure access controls correctly modelled - admin -> smart contract -> minter
• Add max children token logic
• Enforce only Alice can send child tokens to tokens Alice owns
• GAS Reports
• Check method alignment to 998 if possible - aligned as close as possible
• Check contract deployment size - all under 24kb
• Ensure test coverage is high enough for us eot he satisfied
• Consistent revert reasons
• Run contracts through fuzzer/testing tool
• docs