Create metameme-symbols.md

<!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit - **Documentation** - Added a symbolic lexicon outlining key concepts and symbols for the Metameme protocol. - Introduced a narrative document presenting a conceptual framework and poetic description of the Metameme process using glyphs and emojis. <!-- end of auto-generated comment: release notes by coderabbit.ai -->