feat: support lang="vue"

packages/vscode-vue/syntaxes/vue.tmLanguage.json

@@ -631,6 +631,38 @@
 						}
 					]
 				},
+				{
+					"begin": "([a-zA-Z0-9:-]+)\\b(?=[^>]*\\blang\\s*=\\s*(['\"]?)vue\\b\\2)",
+					"beginCaptures": {
+						"1": {
+							"name": "entity.name.tag.$1.html.vue"
+						}
+					},
+					"end": "(</)(\\1)\\s*(?=>)",
+					"endCaptures": {
+						"1": {
+							"name": "punctuation.definition.tag.begin.html.vue"
+						},
+						"2": {
+							"name": "entity.name.tag.$2.html.vue"
+						}
+					},
+					"patterns": [
+						{
+							"include": "#tag-stuff"
+						},
+						{
+							"begin": "(?<=>)",
+							"end": "(?=<\\/)",
+							"name": "source.vue",
+							"patterns": [
+								{
+									"include": "source.vue"
+								}
+							]
+						}
+					]
+				},
 				{
 					"begin": "(template)\\b",
 					"beginCaptures": {