manifest.json

{
    "manifest_version": 2,
    "name": "Copycat",
    "version": "1.0.0",
    "description": "Gives you the ability to copy any URL beneath your cursor by pressing the Z key on your keyboard, or copy hypertext as plain text by pressing the X key.",
    "content_scripts": [
        {
        "matches": ["<all_urls>"],
        "js": ["jquery-3.6.0.min.js", "copylinkaddress.js"]
        }
    ],
    "browser_specific_settings": {
    	"gecko": {
    		"id": "copy@cat"
    	}
    },
    "icons": {
            "48": "/icons/icon48.png",
            "128": "/icons/icon128.png"
    },
    	"web_accessible_resources": [
		"sounds/pop.mp3"
	]
}