Add LaTeX parser to the build.

Include `scanner.c` as extra file; this is definitely needed.
Also adding `parser.c` seems sensible, but yields errors about multiple definitions.

build.rs

@@ -230,6 +230,11 @@ fn main() {
             src_dir: "vendored_parsers/tree-sitter-kotlin-src",
             extra_files: vec!["scanner.c"],
         },
+        TreeSitterParser {
+            name: "tree-sitter-latex",
+            src_dir: "vendored_parsers/tree-sitter-latex-src",
+            extra_files: vec!["scanner.c"],
+        },
         TreeSitterParser {
             name: "tree-sitter-lua",
             src_dir: "vendored_parsers/tree-sitter-lua-src",

vendored_parsers/tree-sitter-latex-src

@@ -0,0 +1 @@
+tree-sitter-latex/src