Add lang-liquid package

Author: marijnh

.gitignore

@@ -32,6 +32,7 @@ package-lock.json
 /lang-wast
 /lang-angular
 /lang-vue
+/lang-liquid
 /lang-sass
 /lang-jinja2
 /lang-less

bin/packages.js

@@ -30,6 +30,7 @@ exports.nonCore = [
   "lang-wast",
   "lang-angular",
   "lang-vue",
+  "lang-liquid",
   "lang-less",
   "legacy-modes",
   "theme-one-dark",

tsconfig.json

@@ -38,6 +38,7 @@
       "@codemirror/lang-wast": ["./lang-wast/src/wast.ts"],
       "@codemirror/lang-angular": ["./lang-angular/src/angular.ts"],
       "@codemirror/lang-vue": ["./lang-vue/src/vue.ts"],
+      "@codemirror/lang-liquid": ["./lang-vue/src/liquid.ts"],
       "@codemirror/lang-sass": ["./lang-sass/src/sass.ts"],
       "@codemirror/lang-less": ["./lang-less/src/less.ts"],
       "@codemirror/theme-one-dark": ["./theme-one-dark/src/one-dark.ts"]