Add grammar for HLSL (High Level Shading Language) (#3469)

.gitmodules

@@ -821,3 +821,6 @@
 [submodule "vendor/grammars/Terraform.tmLanguage"]
 	path = vendor/grammars/Terraform.tmLanguage
 	url = https://github.com/alexlouden/Terraform.tmLanguage
+[submodule "vendor/grammars/shaders-tmLanguage"]
+	path = vendor/grammars/shaders-tmLanguage
+	url = https://github.com/tgjones/shaders-tmLanguage

grammars.yml

@@ -573,6 +573,9 @@ vendor/grammars/scilab.tmbundle:
 - source.scilab
 vendor/grammars/secondlife-lsl:
 - source.lsl
+vendor/grammars/shaders-tmLanguage:
+- source.hlsl
+- source.shaderlab
 vendor/grammars/smali-sublime:
 - source.smali
 vendor/grammars/smalltalk-tmbundle:

lib/linguist/languages.yml

@@ -1598,7 +1598,7 @@ HLSL:
   - ".fxh"
   - ".hlsli"
   ace_mode: text
-  tm_scope: none
+  tm_scope: source.hlsl
   language_id: 145
 HTML:
   type: markup

vendor/licenses/grammar/shaders-tmLanguage.txt

@@ -0,0 +1,26 @@
+---
+type: grammar
+name: shaders-tmLanguage
+license: mit
+---
+MIT License
+
+Copyright (c) 2017 Tim Jones
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.