Add default language server for JSON

Author: David-Else

book/src/generated/lang-support.md

@@ -27,7 +27,7 @@
 | iex | ✓ |  |  |  |
 | java | ✓ |  |  |  |
 | javascript | ✓ |  | ✓ | `typescript-language-server` |
-| json | ✓ |  | ✓ |  |
+| json | ✓ |  | ✓ | `vscode-json-language-server` |
 | jsx | ✓ |  | ✓ | `typescript-language-server` |
 | julia | ✓ |  |  | `julia` |
 | kotlin | ✓ |  |  | `kotlin-language-server` |

languages.toml

@@ -121,6 +121,9 @@ scope = "source.json"
 injection-regex = "json"
 file-types = ["json"]
 roots = []
+language-server = { command = "vscode-json-language-server", args = ["--stdio"] }
+auto-format = true
+config = { "provideFormatter" = true }
 indent = { tab-width = 2, unit = "  " }
 
 [[grammar]]