mnth: Calendar Month Generator

mnth is a lightweight, framework-agnostic utility library designed to simplify the generation of calendar-style month data. Its primary function, `getCalendarMonth`, takes a `Date` object and an optional configuration (e.g., `firstDayOfWeek`) to return a 2D array of `Date` objects, representing all days visible in a given month's calendar view, including leading and trailing days from adjacent months. Currently at version 2.0.0, the package provides a focused solution for UI components like datepickers and full calendars, distinguishing itself by providing raw `Date` objects for maximum flexibility rather than pre-formatted strings or complex component structures. It ships with TypeScript types, promoting strong type checking and improved developer experience. The library is part of the `nextools/metarepo` monorepo.