Have auto-import suggestions for popular abbreviations

[Rizhiy]

Is your feature request related to a problem? Please describe.
Many module names are too long and most people abbreviate them to something short, e.g numpy to np.
Unfortunately, pyright doesn't suggest auto-import for these abbreviations, would be nice if it did.

Describe the solution you'd like
Remember common abbreviations and use them to check for auto-import suggestions.
Might also be a good idea to let user define their own list.

Additional context
Common abbreviations that I've seen being used:

numpy -> np
pandas -> pd
matplotlib.pyplot -> plt
datetime -> dt

[erictraut]

This functionality is already provided by pylance, and we don't plan to replicate this functionality in pyright. While pyright does contain some simple language server features, it's primarily a type checker. More advanced language features like source indexing and abbreviation support for auto-completion are beyond the scope of pyright.