Add .gitignore to exclude all node packages and lock files

skills/remotion-prompt-video/node_modules/@remotion/renderer/dist/get-extension-of-filename.js

@@ -0,0 +1,15 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getExtensionOfFilename = void 0;
+const path_normalize_1 = require("./path-normalize");
+const getExtensionOfFilename = (filename) => {
+    if (filename === null) {
+        return null;
+    }
+    const filenameArr = (0, path_normalize_1.pathNormalize)(filename).split('.');
+    const hasExtension = filenameArr.length >= 2;
+    const filenameArrLength = filenameArr.length;
+    const extension = hasExtension ? filenameArr[filenameArrLength - 1] : null;
+    return extension;
+};
+exports.getExtensionOfFilename = getExtensionOfFilename;