Initial code structure for property drawers.

src/parser/property_drawer.rs

@@ -0,0 +1,11 @@
+use super::Context;
+use crate::parser::error::Res;
+use crate::parser::greater_element::PropertyDrawer;
+
+#[tracing::instrument(ret, level = "debug")]
+pub fn property_drawer<'r, 's>(
+    context: Context<'r, 's>,
+    input: &'s str,
+) -> Res<&'s str, PropertyDrawer<'s>> {
+    todo!()
+}