Ian Manske 3eb9c2a565
drop refactor (#12479)
# Description
Refactors `drop` using `Vec::truncate` and adds a `NeedsPositiveValue`
error.

# User-Facing Changes
Breaking change: `drop` now errors if the number of rows/columns is
negative.
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Nushell core libraries and plugins

These sub-crates form both the foundation for Nu and a set of plugins which extend Nu with additional functionality.

Foundational libraries are split into two kinds of crates:

  • Core crates - those crates that work together to build the Nushell language engine
  • Support crates - a set of crates that support the engine with additional features like JSON support, ANSI support, and more.

Plugins are likewise also split into two types:

  • Core plugins - plugins that provide part of the default experience of Nu, including access to the system properties, processes, and web-connectivity features.
  • Extra plugins - these plugins run a wide range of different capabilities like working with different file types, charting, viewing binary data, and more.