Adding bugs for 2022-12-prepo

[ZhangZhuoSJTU]

Adding newly disclosed code4rena contest bugs.

Contest

Contest: prePO

Contract Code: https://github.com/code-423n4/2022-12-prepo

Number of High Risk Findings: 2

Number of Wardens: 71

Bugs

• [x] [H-01] griefing / blocking / delaying users to withdraw - SC
• [x] [H-02] A whale user is able to cause freeze of funds of other users by bypassing withdraw limit - SC

[ZhangZhuoSJTU]

Leave this issue open as a reference.