[less] add region support

extensions/less/language-configuration.json

@@ -25,5 +25,11 @@
 	"indentationRules": {
 		"increaseIndentPattern": "(^.*\\{[^}]*$)",
 		"decreaseIndentPattern": "^\\s*\\}"
+	},
+	"folding": {
+		"markers": {
+			"start": "^\\s*\\/\\*\\s*#region\\b\\s*(.*?)\\s*\\*\\/",
+			"end": "^\\s*\\/\\*\\s*#endregion\\b.*\\*\\/"
+		}
 	}
 }

extensions/less/package.json

@@ -19,6 +19,10 @@
 			"scopeName": "source.css.less",
 			"path": "./syntaxes/less.tmLanguage.json"
 		}],
+		"snippets": [{
+			"language": "less",
+			"path": "./snippets/less.snippets.json"
+		}],
 		"problemMatchers": [
 			{
 				"name": "lessc",

extensions/less/snippets/less.snippets.json

@@ -0,0 +1,16 @@
+{
+	"Region Start": {
+		"prefix": "#region",
+		"body": [
+			"/*#region $0*/"
+		],
+		"description": "Folding Region Start"
+	},
+	"Region End": {
+		"prefix": "#endregion",
+		"body": [
+			"/*#endregion $0*/"
+		],
+		"description": "Folding Region End"
+	}
+}