feat(node): implement missing methods

- getFirstChildForByte
- getFirstNamedChildForByte

Author: ObserverOfTime

src/main/java/io/github/treesitter/jtreesitter/Node.java

@@ -234,6 +234,24 @@ public Optional<Node> getNamedChild(@Unsigned int index) throws IndexOutOfBounds
         return optional(ts_node_named_child(arena, self, index));
     }
 
+    /**
+     * Get the node's first child that contains or starts after the given byte offset.
+     *
+     * @since 0.25.0
+     */
+    public Optional<Node> getFirstChildForByte(@Unsigned int byte_offset) {
+        return optional(ts_node_first_child_for_byte(arena, self, byte_offset));
+    }
+
+    /**
+     * Get the node's first <em>named</em> child that contains or starts after the given byte offset.
+     *
+     * @since 0.25.0
+     */
+    public Optional<Node> getFirstNamedChildForByte(@Unsigned int byte_offset) {
+        return optional(ts_node_first_named_child_for_byte(arena, self, byte_offset));
+    }
+
     /**
      * Get the node's first child with the given field ID, if any.
      *

src/test/java/io/github/treesitter/jtreesitter/NodeTest.java

@@ -171,6 +171,18 @@ void getNamedChild() {
         assertEquals("class_declaration", child.getGrammarType());
     }
 
+    @Test
+    void getFirstChildForByte() {
+        var child = node.getFirstChildForByte(15).orElseThrow();
+        assertEquals("line_comment", child.getGrammarType());
+    }
+
+    @Test
+    void getFirstNamedChildForByte() {
+        var child = node.getFirstNamedChildForByte(15).orElseThrow();
+        assertEquals("line_comment", child.getGrammarType());
+    }
+
     @Test
     void getChildByFieldId() {
         var child = node.getChild(0).orElseThrow();