Add wrapper bundler

[MerlinEgalite]

Fixes #292

[Rubilmax]

On a general note, I think it'd be clearer to have a draft implementation
You talked about a repository, is it existing?

Do we have a clear usecase described as follows:

• I am an EOA, I want to bundle deposits/withdrawals through the bundler
• Do I want to deposit on behalf of another protocol/EOA?
• Should I transfer anything to the bundler? To somewhere else?
• Who is authorized to do what on the permission wrapper?

[MerlinEgalite]

On a general note, I think it'd be clearer to have a draft implementation You talked about a repository, is it existing?

I'll try to setup the repo this week but it's not my prio yet.

Do we have a clear usecase described as follows:

• I am an EOA, I want to bundle deposits/withdrawals through the bundler
• Do I want to deposit on behalf of another protocol/EOA?
• Should I transfer anything to the bundler? To somewhere else?
• Who is authorized to do what on the permission wrapper?

Let's say I'm an EOA:

1. Deposit not permissionless tokens to the bundler
2. Wrap those tokens to the permissioned token (the bundler is whitelisted in the permissioned token)
3. Supply those tokens as collateral on Blue (blue is whitelisted in the permissioned token)

That makes me think that there's a pb at step 2 in this PR I think
🤔

[Rubilmax]

The rationale for this user would be: I prefer to interact with permissioned tokens to avoid touching securities right?

[MerlinEgalite]

The rationale for this user would be: I prefer to interact with permissioned tokens to avoid touching securities right?

It's for these reasons for example

EDIT: the link was missing sorry

[Rubilmax]

I overall feel like OZ's ERC20Wrapper is poorly maintained and not standardized so I'd instead advocate to define our own (including the feature to withdraw on behalf of someone else, provided you are given enough allowance)

Obviously there are features that are not possible for regulatory reasons but I think this workshop deserves a design call. Can we plan one?

[MerlinEgalite]

I overall feel like OZ's ERC20Wrapper is poorly maintained

What leads you to say that?

Overall agree with the rest. I think it's quite easy to adapt the code to our needs

[openzeppelin-code]

Add wrapper bundler

Generated at commit: f77392b52abe2f9f1262e979890385c54f806bc6

🚨 Vulnerabilities Summary

Process	Issues	Results
Contract Inspector	note low critical Total	20 10 1 31
Dependency Checker	Total	0

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For more details view the full report in OpenZeppelin Code

[Rubilmax]

Seems correct but I need to review it with underlying PRs merged to make sure we're not missing a change