[stdlib]todo list

[tiangong3624749]

TODO:

• [x] PackageTxnManager：fire event in fun package_txn_epilogue

• [ ] Dao：multi votes & propose multi proposals & add a token manage cap in Token module

• [ ] Offer：should support multi Offer

• [x] TokenLockPool：how to init other token's pool

• [x] UpgradeModuleDaoProposal：should check duplicate cap?

• [x] ModifyDaoConfigProposal：assert cap.account_address == token_issuer

• [ ] Authenticator：添加2个常量，用于区分是否多签

• [x] Version：定义一个error code

• [ ] 其他：spec的todo

Fix me：

• [x] SortedLinkedList：the pointers at prev & next

• [x] Config：ModifyConfigCapability的events should put into Config resource

• [x] PackageTxnManager：submit_upgrade_plan_with_cap有一个assert被注释掉了

• [ ] 其他：spec的fix me

[jolestar]

PackageTxnManager：submit_upgrade_plan_with_cap 这个在 https://github.com/starcoinorg/starcoin/pull/1543 中解决

[jolestar]

TokenLockPool：how to init other token's pool 和 SortedLinkedList：the pointers at prev & next 这个暂时被移走了，先不放到 stdlib 中。