php: Add bracket highlighting (#15881)

Xander created 

Improved PHP extension by adding bracket highlighting 

Release Notes:

- N/A

Screenshot: 
<img width="402" alt="image"
src="https://github.com/user-attachments/assets/4dd02b41-8637-49b8-b3ce-41791227f945">

<img width="537" alt="image"
src="https://github.com/user-attachments/assets/b6dc7091-4588-460b-9051-4675eb0df538">

Change summary

extensions/php/languages/php/brackets.scm | 1 +
1 file changed, 1 insertion(+)

Detailed changes