Added codemirror standard package.

npm/packs/codemirror/abp.resourcemapping.js

@@ -0,0 +1,8 @@
+module.exports = {
+    imports: [
+        "../core/abp.resourcemapping.js"
+    ],
+    mappings: {
+        "@node_modules/codemirror/lib/*.*": "@libs/codemirror/"
+    }
+}

npm/packs/codemirror/package.json

@@ -0,0 +1,11 @@
+{
+  "version": "0.3.1",
+  "name": "@abp/codemirror",
+  "publishConfig": {
+    "access": "public"
+  },
+  "dependencies": {
+    "@abp/core": "^0.3.1",
+    "codemirror": "^5.38.0"
+  }
+}