Add support for D language

[ErdoganSeref]

The change resolves #3832. I need help to complete the tree-sitter configuration.

[the-mikedavis]

That repository git-ignores the generated parser.c and parser.h files which we need to compile the parser. See https://github.com/CyberShadow/tree-sitter-d/issues/6

You can get around it by creating a fork of the repository, removing these lines, running tree-sitter generate, and committing the generated files.

[the-mikedavis]

It looks like the author of #3832 is working on rewriting or improving tree-sitter-d, so we might be able to take advantage of that new grammar when they are finished

[the-mikedavis]

https://github.com/helix-editor/helix/issues/3832#issuecomment-1277139601