feat: added typst support

tests/input/typst-simple.typ

@@ -0,0 +1,11 @@
+// This is a minimal Typst document with multi-level headings and comments
+
+= Document Title
+
+== Heading Level 2
+
+=== Heading Level 3
+
+==== Heading Level 4
+
+=== Heading Level 3

tests/reference/typst-simple.typ

@@ -0,0 +1,23 @@
+// ┌───────────────────────────────────────────────────────────────┐
+// │ Contents of typst-simple.typ                                  │
+// ├───────────────────────────────────────────────────────────────┘
+// │
+// ├──┐Document Title
+// │  └──┐Heading Level 2
+// │     ├──┐Heading Level 3
+// │     │  └── Heading Level 4
+// │     └── Heading Level 3
+// │
+// └───────────────────────────────────────────────────────────────
+
+// This is a minimal Typst document with multi-level headings and comments
+
+= Document Title
+
+== Heading Level 2
+
+=== Heading Level 3
+
+==== Heading Level 4
+
+=== Heading Level 3

toc/toc.py

@@ -513,7 +513,7 @@ def _toc_body(self) -> list:
         _data = self._read_file()
         _lines = _data.splitlines()
         match self.extension:
-            case "ad" | "adoc" | "asc" | "asciidoc":
+            case "ad" | "adoc" | "asc" | "asciidoc" | "typ":
                 _newtoc = self._process_increasing(_lines, "=")
             case "beancount":
                 _newtoc = self._process_increasing(_lines, "*")