feat: violenmonkey script

scripts/github.js

@@ -0,0 +1,46 @@
+// ==UserScript==
+// @name         Nixpkgs subscribe
+// @namespace    http://tampermonkey.net/
+// @version      2024-07-25
+// @description  try to take over the world!
+// @author       You
+// @match        https://github.com/*
+// @icon         https://www.google.com/s2/favicons?sz=64&domain=github.com
+// ==/UserScript==
+
+
+function addButton() {
+    const buttonContainerElement = document.querySelector('.gh-header-actions');
+    const div = document.createElement('div');
+    div.classList = 'flex-md-order-2 pr_tracker';
+        const pr= window.location.pathname.split('/')[4];
+
+    const btn = document.createElement('button');
+    btn.classList = 'Button--secondary Button--small Button';
+    btn.type = 'button';
+    btn.innerText = `Subscribe`;
+    btn.addEventListener('click', function() {
+        navigator.clipboard.writeText("nim add-pr " + pr);
+    });
+
+
+    div.appendChild(btn);
+    buttonContainerElement.firstElementChild.before(div);
+}
+
+function maybeAddButton(){
+    const loc = window.location.pathname;
+    if (loc.match("^/NixOS/nixpkgs/pull/[0-9]*") && (document.getElementsByClassName("pr_tracker").length == 0 )){
+        addButton();
+    }
+    setTimeout(maybeAddButton, 250);
+
+}
+
+(function() {
+    'use strict';
+
+    // Your code here...
+    maybeAddButton();
+})();
+