[4337 Module] Coordinate external audit

[rmeissner]

Contract to be audited:

• Module/Fallback handler
• Deployment utility contracts (i.e. library or factorY)
• Document technical details and usage
  • Security considerations

[mmv08]

Just documenting here that it might depend on #87

[joaoavf]

Hey, great to see this taking shape! We are considering using the 4337 module in our product - curious to know if you have a sense of timelines for a stable version of the code and for the audit.

(I understand things might be quite uncertain at this moment - but appreciate a general overview on it - and sorry if this is not the best forum to ask this question)

[nlordell]

Just to document here that the audit was kicked off.

[nlordell]

@joaoavf - the audit was concluded and the findings were added in #139