Add LLVM TableGen highlighting (#1409)

Add a tree-sitter grammar and highlights for TableGen files.
TableGen and its grammar are described here:
https://llvm.org/docs/TableGen/index.html

Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>

1 files changed, 9 insertions, 0 deletions

diff --git a/languages.toml b/languages.toml
index f088a3aa..7a895a60 100644
--- a/languages.toml
+++ b/languages.toml
@@ -437,6 +437,15 @@ comment-token = ";"
 indent = { tab-width = 2, unit = "  " }
 
 [[language]]
+name = "tablegen"
+scope = "source.tablegen"
+roots = []
+file-types = ["td"]
+comment-token = "//"
+indent = { tab-width = 2, unit = "  " }
+injection-regex = "tablegen"
+
+[[language]]
 name = "markdown"
 scope = "source.md"
 injection-regex = "md|markdown"