Code navigation for new language: DM

## Language

DM (https://www.byond.com/docs/ref)

**DM**, also known as **Dream Maker**, is a programming language used in the **BYOND** RPG game engine. One of the biggest FOSS games, **Space Station 13**, is written in this language and is actively being developed. Most of the branches of the original game use the GitHub as a repository for the source code of the game. The ecosystem of the language is also mainly supported by developers of various branches of the game.

## Linguist entry

- [x] Linguist language name: DM
- [x] Linguist language ID: 83
- [x] Permalink: https://github.com/github-linguist/linguist/blob/537297cdae3ab05f8d5dd1c03627a5bd73707b19/lib/linguist/languages.yml#L1611-L1620

## Tree-sitter parser

Parser URL: https://github.com/FeudeyTF/tree-sitter-dm

- [x] Parser is open source: MIT license
- [x] Repository includes tags queries
- [ ] Tags queries include `@scope` for fully-qualified names (if applicable)
- [x] Rust crate: https://crates.io/crates/tree-sitter-dm

## Remarks

The DM programming language has been supported in GitHub Linguist since 2013, but uses only a grammar based on TextMate. Now it is possible to use a modern tree-sitter-dm parser based on the tree-sitter project.

Leia a seção da README de Code Navigation sobre como adicionar uma nova linguagem e, em seguida, examine a entrada de linguagem fornecida do Linguist e o repositório tree-sitter-dm. Verifique se o parser, as consultas de tags e o crate Rust atendem aos requisitos indicados; considera-se concluído quando a submissão de DM é aceita para navegação de código ou quando os requisitos ausentes são identificados.

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