Closes #36439 and #32999 ## C++20 modules: Before (Zed Preview v0.201.3): <img width="1048" height="704" alt="image" src="https://github.com/user-attachments/assets/8eaaf77f-4e27-4a5a-9e87-4e5ba7293990" /> After: <img width="1048" height="704" alt="image" src="https://github.com/user-attachments/assets/df8d0b2c-f2d0-4b0e-9a52-495e6be5a8c0" /> ## C++20 coroutines: Before (Zed Preview v0.201.3): <img width="1048" height="704" alt="image" src="https://github.com/user-attachments/assets/652191ec-a653-444d-a239-da3e4e4b661e" /> After: <img width="1048" height="704" alt="image" src="https://github.com/user-attachments/assets/36947eb5-8997-483a-b36c-8af84872b158" /> ## Logical operators: Before (Zed Preview v0.201.3): <img width="511" height="102" alt="image" src="https://github.com/user-attachments/assets/9bf95bac-b076-4edd-a1f3-c3dfee98c2fd" /> After: <img width="511" height="102" alt="image" src="https://github.com/user-attachments/assets/82c7564d-b94d-41f5-9c48-e39fe3ba3b3e" /> ## Operator keyword: Before (Zed Preview v0.201.3): <img width="591" height="381" alt="image" src="https://github.com/user-attachments/assets/1d9dad05-2d86-4566-97f4-aff440dcd1df" /> After: <img width="591" height="381" alt="image" src="https://github.com/user-attachments/assets/a1ca289a-8a5d-4ffd-96db-0d511405da4b" /> ## Goto: Before (Zed Preview v0.201.3): <img width="610" height="430" alt="image" src="https://github.com/user-attachments/assets/2d00382b-d1ad-4e36-a3ee-88e06ec528ed" /> After: <img width="610" height="430" alt="image" src="https://github.com/user-attachments/assets/de887b21-66f0-4a70-9ed2-e18dbb3c81c9" /> Release Notes: - Enhance keyword highlighting for C++