[Meta] Account abstraction tracking

[Amxx]

5.2

• Add Account Abstraction utils and interfaces #5242
• Add ERC7739 and ERC7739Utils #5243
• Add ERC4337 Account implementations (should move to community repo) #5244
• Add ERC7579 Account and validator modules #5250
• Merge account abstraction work into master #5274
• resolve a few pending question:
  • ERC4337Utils.sol
    • combineValidationData: keep it? For what usecase? what if aggregator1 == aggregator2
    • getValidationData: "in range" vs "out of range" boolean

Next

• Track ERC-7739 changes
• Account framework into openzeppelin-community-contracts

Later

• Move vendor/erc4337-entrypoint to mocks (or to other package) #5246
  • should not be packaged, can be removed from files exception
  • need to fix linter
  • alternative, put these files into a dependency that we import
    • that would be cleaner for upgradeability
  • because vendor/erc4337-entrypoint is not package, moving it or removing it would not be breaking
• When hardhat fixes HH415: Ambigious source name when remappings are used within sources.  NomicFoundation/hardhat#4399
  • revert OZ Edit in contracts/vendor/erc4337-entrypoint/core/EntryPoint.sol
  • remove the upgradable.exclude.patch for the transpilation process

[Amxx]

Code location (to discuss)

• Entrypoint: @openzeppelin/contracts/vendor (mocks? other repo?)
• ERC4337 interface: @openzeppelin/contracts/interface
• ERC7579 interface: @openzeppelin/contracts/interface
• ERC4337 utils: @openzeppelin/contracts/account/utils
• ERC7579 utils: @openzeppelin/contracts/account/utils
• ERC7739 utils: @openzeppelin/contracts/utils/cryptography
• ERC7739 signer: @openzeppelin/contracts/utils/cryptography
• AccountBase: @openzeppelin/community-contracts/account ?
• AccountECDSA, AccountP256, AccountRSA: @openzeppelin/community-contracts/account/extensions ?
• AccountERC7579, AccountERC7579Hooks: @openzeppelin/community-contracts/account/extensions ?
• ERC7579Modules: @openzeppelin/community-contracts/account/modules
• Factory: @openzeppelin/contracts/mocks ?