Integrated generated code for /v1/account_links

[scrblue]

Simply includes the generated code and adds the mod and pub use statements in resources.rs. One modification from the generated code was made for API compliance: the generated AccountLinkType enum had the options CustomAccountUpdate and CustomAccountVerification, but I changed it to AccountUpdate and AccountOnboarding to match the API documented here. The resulting functionality was tested a decent amount and seems to work properly.

[arlyon]

Hello, apologies for the late reply. We are working on getting up to speed on pull requests. May I ask if you are still interested in merging this (we are!) that you rebase? Thank you.

As a general rule we should probably refrain from hand-editing the generated code, even though it deviates slightly from the spec, and instead look to change the codegen.

[scrblue]

Hi, I can definitely get it working with the current master branch sometime soon. I'll take a look at the generation first too :)

[arlyon]

Happy to give pointers if needed.

[seanpianka]

What are the issues in the codegen that are causing the generated field names to be incorrect? Is it using an old schema of the API for generation?