Add filter syntax to prevent recursive parsing (no_parse filter)

[ntindle]

Add support for Jinja-style filter syntax that allows users to prevent recursive parsing of tag content.

Feature Request

Users should be able to add a | no_parse filter to tags to stop parsing at that level and treat the inner content as a raw string.

Syntax

<tag | no_parse><inner><content>anything</content></inner></tag>

Expected Behavior

Instead of parsing the inner tags recursively, the parser should:

• Recognize the | no_parse filter syntax
• Collect everything between the opening and closing tags as raw string content
• Attach this raw string as the value for that node

Use Cases

• Preserving HTML/XML content without further processing
• Storing template code or markup as literal strings
• Preventing unwanted parsing of complex nested structures

Implementation Notes

• Should maintain backward compatibility with existing markup
• Filter syntax should be extensible for future filter types
• Consider Jinja-style syntax for familiarity