feat(language): add D language support (#728)

Register D (.d/.di) with comments, indentation, the built-in D highlighting mode, a file icon, and serve-d as its language server (dub.json/dub.sdl roots). Closes #727.

Co-authored-by: a-rookie-of-C-language <[email protected]>

src/ui/icons.tsx

@@ -130,6 +130,7 @@ const ICONS = {
   "file-gdscript": "openidea/fileTypes/gdscript",
   "file-godot": "openidea/fileTypes/godot",
   "file-gdshader": "openidea/fileTypes/gdshader",
+  "file-d": "openidea/fileTypes/d",
   "file-dart": "openidea/fileTypes/dart",
   "file-elixir": "openidea/fileTypes/elixir",
   "file-erlang": "openidea/fileTypes/erlang",
@@ -878,6 +879,7 @@ const EXT_ICONS = table({
   "file-gdscript": "gd",
   "file-godot": "tscn tres godot import",
   "file-gdshader": "gdshader gdshaderinc",
+  "file-d": "d di",
   "file-dart": "dart",
   "file-elixir": "ex exs",
   "file-erlang": "erl hrl escript app.src",

src/ui/openidea/fileTypes/d.svg

@@ -0,0 +1,3 @@
+<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g stroke-linejoin="round"><path d="M14 4C14 2.89543 13.1046 2 12 2H4C2.89543 2 2 2.89543 2 4V12C2 13.1046 2.89543 14 4 14H12C13.1046 14 14 13.1046 14 12V4Z" fill="#BA4032"/><path transform="translate(4 3.5)" d="M0.5 0.5V8.5" stroke="#2B2D30"/><path transform="translate(4 3.5)" d="M0.5 0.5H2.7C5.8 0.5 7.4 2.2 7.4 4.5C7.4 6.8 5.8 8.5 2.7 8.5H0.5" stroke="#2B2D30"/></g>
+</svg>

src/ui/openidea/fileTypes/d_dark.svg

@@ -0,0 +1,3 @@
+<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g stroke-linejoin="round"><path d="M14 4C14 2.89543 13.1046 2 12 2H4C2.89543 2 2 2.89543 2 4V12C2 13.1046 2.89543 14 4 14H12C13.1046 14 14 13.1046 14 12V4Z" fill="#CE5B4C"/><path transform="translate(4 3.5)" d="M0.5 0.5V8.5" stroke="#2B2D30"/><path transform="translate(4 3.5)" d="M0.5 0.5H2.7C5.8 0.5 7.4 2.2 7.4 4.5C7.4 6.8 5.8 8.5 2.7 8.5H0.5" stroke="#2B2D30"/></g>
+</svg>