Add type definitions for jpegtran-bin (#25156)

types/jpegtran-bin/index.d.ts

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+// Type definitions for jpegtran-bin 3.2
+// Project: https://github.com/imagemin/jpegtran-bin#readme
+// Definitions by: Hirotaka Ikoma <https://github.com/hikoma>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/// <reference types="node" />
+
+declare const jpegtran: string;
+export = jpegtran;

types/jpegtran-bin/jpegtran-bin-tests.ts

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+import { execFile } from "child_process";
+import * as jpegtran from "jpegtran-bin";
+
+execFile(jpegtran, ["-outfile", "output.jpg", "input.jpg"], { encoding: "utf-8" }, (err: Error | null) => {
+    console.log("Image minified!");
+});

types/jpegtran-bin/tsconfig.json

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

types/jpegtran-bin/tslint.json

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