Add ExtraFieldsException

[vedantpuri]

• cattrs version: 22.1.0.dev0
• Python version: 3.7.5
• Operating System: macOS Monterey (12.2.1)

Description

Trying to catch a specific exception for when extra fields are passed on the attrs class I am trying to construct. Right now the vanilla Exception is raised which I think should be made more specific.

What I Did

See #236

[Tinche]

There's a PR to fix this: #225

[vedantpuri]

Thats awesome!! Feel free to close this issue then, I haven't looked into the PR yet but it would be nice to make that Exception recursive too (so its easy to point to nested attrs classes when recursing through the exceptions)

[Tinche]

This is done!