added first line pattern for glsl because some extensions conflict with
others like fragment shaders (.fs) would be highlighted by f#

<details>

| no f# extension no fix | f# extension no fix | f# extension with fix |
|--------|--------|--------|
|
![zed_TW1mkwXSMS](https://github.com/user-attachments/assets/d3d64b44-ced5-41a8-86b1-36cafc92f7e4)
|
![zed_T5ewceKmHo](https://github.com/user-attachments/assets/08ced11d-c2c6-4b73-964d-768e8ba763da)
|
![zed_9Rhkc5flQZ](https://github.com/user-attachments/assets/9e949d00-4e69-4687-9863-e0ab38b8b3df)
|

</details>

Release Notes:

- glsl: Added a workaround for an issue where fragment shaders with the `.fs` file extension would be misidentified as F#. Now, adding `#version {version}` to the first line of your fragment shader will ensure it is always recognized as glsl