Instructs the browser to load a Script packaged in the extension, known as the API Script, this Script is used to export a set of custom API methods for use in user Scripts. The API Script path, relative to the manifest.json file, is defined as a string in "api_Script"....Example json "user_scripts": { "api_script": "apiscript.js", }...Instructs the browser to load a script packaged in the extension,...