Node.js Full ICU Data Installer

The `full-icu` package, currently at version 1.5.0, provides a utility for Node.js environments configured with `small-icu` to enable full International Components for Unicode (ICU) data at runtime. This module became significantly less critical with Node.js 13 and later, which default to full ICU data, rendering `full-icu` largely unnecessary for modern applications unless using a custom Node.js build explicitly set to `small-icu`. Its release cadence is irregular, typically tied to maintenance or updates related to Node.js's ICU integration. Unlike other internationalization libraries, `full-icu` does not introduce new APIs; instead, it focuses solely on providing the underlying data necessary for Node.js's built-in `Intl` object to function with all locales, downloading it from GitHub releases or optionally the `icu4c-data` npm package. Its primary differentiator is simplifying the process of obtaining full ICU data without requiring a custom Node.js build, making it a tool primarily for specific legacy or specialized Node.js configurations.