Capture data on conda errors users run into

[pseudoyim]

Feature request
Functionality to capture data on the conda errors that users run into. For example, if a user ran conda install non_existent_package, the plugin could capture and transmit a record of the PackagesNotFound error that would result.

Why
This would be useful for Anaconda in tracking cases where a user attempted to install or search for a package that was not in the user's configured channels (e.g. main). Anaconda could then use this data to research the package the user was interested in, see if other users request it, and use this info to determine whether to add it to our distribution.

[jezdez]

This will likely need a new error_handlers plugin hook to be able to hook into conda properly. I've opened conda/conda#14436 about it.