Extract GLSL language support into an extension (#10433)

Release Notes:

- Extracted GLSL language support into an extension.

---------

Co-authored-by: Marshall <marshall@zed.dev>
Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>

extensions/glsl/LICENSE-APACHE

@@ -0,0 +1 @@
+../../LICENSE-APACHE

extensions/glsl/extension.toml

@@ -0,0 +1,11 @@
+id = "glsl"
+name = "GLSL"
+description = "GLSL support."
+version = "0.0.1"
+schema_version = 1
+authors = ["Mikayla Maki <mikayla@zed.dev>"]
+repository = "https://github.com/zed-industries/zed"
+
+[grammars.glsl]
+repository = "https://github.com/theHamsta/tree-sitter-glsl"
+commit = "31064ce53385150f894a6c72d61b94076adf640a"

extensions/glsl/languages/glsl/config.toml

@@ -0,0 +1,10 @@
+name = "GLSL"
+grammar = "glsl"
+path_suffixes = ["vert", "frag", "tesc", "tese", "geom", "comp"]
+line_comments = ["// "]
+block_comment = ["/* ", " */"]
+brackets = [
+    { start = "{", end = "}", close = true, newline = true },
+    { start = "[", end = "]", close = true, newline = true },
+    { start = "(", end = ")", close = true, newline = true },
+]

extensions/glsl/languages/glsl/highlights.scm

@@ -0,0 +1,117 @@
+"break" @keyword
+"case" @keyword
+"const" @keyword
+"continue" @keyword
+"default" @keyword
+"do" @keyword
+"else" @keyword
+"enum" @keyword
+"extern" @keyword
+"for" @keyword
+"if" @keyword
+"inline" @keyword
+"return" @keyword
+"sizeof" @keyword
+"static" @keyword
+"struct" @keyword
+"switch" @keyword
+"typedef" @keyword
+"union" @keyword
+"volatile" @keyword
+"while" @keyword
+
+"#define" @keyword
+"#elif" @keyword
+"#else" @keyword
+"#endif" @keyword
+"#if" @keyword
+"#ifdef" @keyword
+"#ifndef" @keyword
+"#include" @keyword
+(preproc_directive) @keyword
+
+"--" @operator
+"-" @operator
+"-=" @operator
+"->" @operator
+"=" @operator
+"!=" @operator
+"*" @operator
+"&" @operator
+"&&" @operator
+"+" @operator
+"++" @operator
+"+=" @operator
+"<" @operator
+"==" @operator
+">" @operator
+"||" @operator
+
+"." @delimiter
+";" @delimiter
+
+(string_literal) @string
+(system_lib_string) @string
+
+(null) @constant
+(number_literal) @number
+(char_literal) @number
+
+(identifier) @variable
+
+(field_identifier) @property
+(statement_identifier) @label
+(type_identifier) @type
+(primitive_type) @type
+(sized_type_specifier) @type
+
+(call_expression
+  function: (identifier) @function)
+(call_expression
+  function: (field_expression
+    field: (field_identifier) @function))
+(function_declarator
+  declarator: (identifier) @function)
+(preproc_function_def
+  name: (identifier) @function.special)
+
+((identifier) @constant
+ (#match? @constant "^[A-Z][A-Z\\d_]*$"))
+
+(comment) @comment
+
+[
+  "in"
+  "out"
+  "inout"
+  "uniform"
+  "shared"
+  "layout"
+  "attribute"
+  "varying"
+  "buffer"
+  "coherent"
+  "readonly"
+  "writeonly"
+  "precision"
+  "highp"
+  "mediump"
+  "lowp"
+  "centroid"
+  "sample"
+  "patch"
+  "smooth"
+  "flat"
+  "noperspective"
+  "invariant"
+  "precise"
+] @type.qualifier
+
+"subroutine" @keyword.function
+
+(extension_storage_class) @storageclass
+
+(
+  (identifier) @variable.builtin
+  (#match? @variable.builtin "^gl_")
+)