Start with the dictionary environment

Use datatool to create database of entries and print them sorted.

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+### Added
+
+- Create the `dictionary` environment where the
+  `\entry{word}{description}` command can be used.

dictionary.sty

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+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{dictionary}[2024/11/24 Dictionary]
+
+\RequirePackage{babel}
+\RequirePackage{datatool}
+
+\newcommand{\entry}[2]{%
+  \DTLnewrow{dictionary}%
+  \DTLnewdbentry{dictionary}{word}{#1}%
+  \DTLnewdbentry{dictionary}{translation}{#2}%
+}
+
+\newenvironment{dictionary}{%
+  \DTLifdbexists{dictionary}{\DTLcleardb{dictionary}}{\DTLnewdb{dictionary}}%
+}{%
+  \DTLsort{word}{dictionary}%
+  \scriptsize%
+  \DTLforeach*{dictionary}{\word=word,\translation=translation}{%
+    \selectlanguage{vietnamese}\textbf{\word:} \selectlanguage{naustrian}\translation\\}%
+  \selectlanguage{vietnamese}%
+}