Fixes #805: Autocompletion inside package.json for tooling packages c…

…onfigs (e.g. eslint, babel)

package-json-schema.json

@@ -0,0 +1,9 @@
+{
+	"$schema": "http://json-schema.org/draft-07/schema",
+	"properties": {
+		"eslintConfig": {
+			"description": "ESLint configuration",
+			"$ref": "http://json.schemastore.org/eslintrc"
+		}
+	}
+}

package.json

@@ -409,6 +409,10 @@
 			{
 				"fileMatch": ".eslintrc.json",
 				"url": "http://json.schemastore.org/eslintrc"
+			},
+			{
+				"fileMatch": "package.json",
+				"url": "./package-json-schema.json"
 			}
 		],
 		"languages": [