btschool: use cookie (#7290)

Got all kinds of error using username and password

src/Jackett.Common/Definitions/btschool.yml

@@ -27,24 +27,23 @@
       tv-search: [q, season, ep, imdbid]
       movie-search: [q, imdbid]
 
+  settings:
+    - name: cookie
+      type: text
+      label: Cookie
+    - name: info
+      type: info
+      label: How to get the Cookie
+      default: "<ol><li>Login to this tracker in your browser<li>Open the <b>DevTools</b> panel by pressing <b>F12</b><li>Select the <b>Network</b> tab<li>Click on the <b>Doc</b> button<li>Refresh the page by pressing <b>F5</b><li>Select the <b>Headers</b> tab<li>Find 'cookie:' in the <b>Request Headers</b> section<li>Copy & paste the whole cookie string to here</ol>"
+
   login:
-    path: login.php
-    method: form
-    form: form[action="takelogin.php"]
-    captcha:
-      type: image
-      selector: img[alt="CAPTCHA"]
-      input: imagestring
+    method: cookie
     inputs:
-      username: "{{ .Config.username }}"
-      password: "{{ .Config.password }}"
-    error:
-      - selector: td.embedded:has(h2:contains("登錄失敗"))
-      - selector: td.embedded:has(h2:contains("失败"))
+      cookie: "{{ .Config.cookie }}"
     test:
       path: index.php
       selector: a[href="logout.php"]
-        
+
   search:
     paths:
       - path: torrents.php