[creditdunordpee] rewrite using s2e, make it work with OTP / device fingerprinting
Credit du Nord PEE has (now) an enhanced security feature, using a kind of 'fingerprinting' of the browser device which is used to detect if you changed device ; and will trigger the sending of a OTP to email or SMS for authorization of a new device. If you fill-in the proper OTP you received, it will allow this new device from now on.
The current creditdunordpee does not handle this feature, and I was not able to add it easily.
Instead, I found that this bank is using what looks like a shared platform with other banks - that is already supported by weboob (module : s2e for the shared code, and modules: bnppere, capeasi, erehsbc, esalia for the banks using it)
Thus I rewrote the creditdunordpee module to use s2e shared code and have the authentication working.
In addition to fixing authentication, the use of s2e module gives us a new capability (CapBankPockets). Morever, it seems maintained.