Expose SnippetGenerator.set_max_num_chars() so changing the default is possible (#323)

Co-authored-by: Erlend Simonsen <[email protected]>

Author: Fudge

src/snippet.rs

@@ -80,4 +80,8 @@ impl SnippetGenerator {
         let result = self.inner.snippet(&text);
         Snippet { inner: result }
     }
+
+    pub fn set_max_num_chars(&mut self, max_num_chars: usize) {
+        self.inner.set_max_num_chars(max_num_chars);
+    }
 }

tantivy/tantivy.pyi

@@ -433,3 +433,6 @@ class SnippetGenerator:
 
     def snippet_from_doc(self, doc: Document) -> Snippet:
         pass
+
+    def set_max_num_chars(self, max_num_chars: int) -> None:
+        pass