Add .gitignore to exclude all node packages and lock files

skills/remotion-prompt-video/node_modules/@remotion/webcodecs/dist/generate-output-filename.js

@@ -0,0 +1,14 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.generateOutputFilename = void 0;
+const generateOutputFilename = (source, container) => {
+    const filename = typeof source === 'string'
+        ? source
+        : source instanceof File
+            ? source.name
+            : 'converted';
+    const behindSlash = filename.split('/').pop();
+    const withoutExtension = behindSlash.split('.').slice(0, -1).join('.');
+    return `${withoutExtension}.${container}`;
+};
+exports.generateOutputFilename = generateOutputFilename;