feat(webpack-cdn-inject): new type definition (#45530)

Type definition for small webpack plugin:
- definition file
- tests

https://github.com/drolsen/webpack-cdn-inject#readme

Thanks!

types/webpack-cdn-inject/index.d.ts

@@ -0,0 +1,28 @@
+// Type definitions for webpack-cdn-inject 1.0
+// Project: https://github.com/drolsen/webpack-cdn-inject#readme
+// Definitions by: Piotr Błażejewicz <https://github.com/peterblazejewicz>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+import { Plugin } from 'webpack';
+
+/**
+ * Plugin to inject CDN assets into HTML documents.
+ */
+declare namespace WebpackCDNInject {
+    interface Options {
+        /**
+         * Defines urls to be added to document head (tag type is defined by url's file extension).
+         */
+        head?: string[];
+        /**
+         * Defines urls to be added to document body (tag type is defined by url's file extension).
+         */
+        body?: string[];
+    }
+}
+
+declare class WebpackCDNInject extends Plugin {
+    constructor(options?: WebpackCDNInject.Options);
+}
+
+export = WebpackCDNInject;

types/webpack-cdn-inject/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictFunctionTypes": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "webpack-cdn-inject-tests.ts"
+    ]
+}

types/webpack-cdn-inject/tslint.json

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+{ "extends": "dtslint/dt.json" }

types/webpack-cdn-inject/webpack-cdn-inject-tests.ts

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+import { Configuration } from 'webpack';
+import WebpackCDNInject = require('webpack-cdn-inject');
+
+const config: Configuration = {
+    plugins: [
+        new WebpackCDNInject(),
+        new WebpackCDNInject({}),
+        new WebpackCDNInject({
+            body: ['url.js', 'url.css'],
+        }),
+        new WebpackCDNInject({
+            head: ['url.css', 'url.js'],
+        }),
+        new WebpackCDNInject({
+            body: ['url.js', 'url.css'],
+            head: ['url.css', 'url.js'],
+        }),
+    ],
+};