docs: add Custom Claims authorization method for PocketID

_panel-docs/help-articles/en/AUTH_METHODS_POCKETID.md

@@ -15,3 +15,22 @@ After creating the OAuth2 application – copy the `Client ID` and `Client Secre
 
 In the `Plain Domain` field, enter the domain address where your PocketID is located.
 Just enter the domain name – without the path and `https://`, for example: `pocketid.your-domain.com`
+
+### Custom Claims (v2.4.0+)
+
+Remnawave also supports authorization using Custom Claims.
+When using this method, you do not need to specify an array of email addresses.
+
+Key
+
+```
+remnawaveAccess
+```
+
+Value
+
+```
+true
+```
+
+Accordingly, if a user has this key (`remnawaveAccess: true`) in their token, they will be authorized.

_panel-docs/help-articles/fa/AUTH_METHODS_POCKETID.md

@@ -15,3 +15,22 @@ After creating the OAuth2 application – copy the `Client ID` and `Client Secre
 
 In the `Plain Domain` field, enter the domain address where your PocketID is located.
 Just enter the domain name – without the path and `https://`, for example: `pocketid.your-domain.com`
+
+### Custom Claims (v2.4.0+)
+
+Remnawave also supports authorization using Custom Claims.
+When using this method, you do not need to specify an array of email addresses.
+
+Key
+
+```
+remnawaveAccess
+```
+
+Value
+
+```
+true
+```
+
+Accordingly, if a user has this key (`remnawaveAccess: true`) in their token, they will be authorized.

_panel-docs/help-articles/ru/AUTH_METHODS_POCKETID.md

@@ -14,3 +14,22 @@ https://YOUR_PANEL_DOMAIN/oauth2/callback/pocketid
 После создания OAuth2 приложения – скопируйте `Client ID` и `Client Secret`. Вставьте эти данные в соответствующем разделе. А чуть ниже введите список email-адресов для которых будет разрешен вход.
 
 В поле `Домен` (`Plain Domain`) введите доменный адрес, на котором у вас расположен PocketID. Достаточно ввести просто доменное имя – без пути и https://, например: `pocketid.your-domain.com`
+
+### Custom Claims (v2.4.0+)
+
+Remnawave так же поддерживает авторизацию через добавление Custom Claims.
+При использовании этого метода, массив email-адресов можно не указывать.
+
+Ключ
+
+```
+remnawaveAccess
+```
+
+Значение
+
+```
+true
+```
+
+Соотвественно, если пользователь имеет этот ключ (`remnawaveAccess: true`) в токене, то он будет авторизован.

_panel-docs/help-articles/zh/AUTH_METHODS_POCKETID.md

@@ -15,3 +15,22 @@ After creating the OAuth2 application – copy the `Client ID` and `Client Secre
 
 In the `Plain Domain` field, enter the domain address where your PocketID is located.
 Just enter the domain name – without the path and `https://`, for example: `pocketid.your-domain.com`
+
+### Custom Claims (v2.4.0+)
+
+Remnawave also supports authorization using Custom Claims.
+When using this method, you do not need to specify an array of email addresses.
+
+Key
+
+```
+remnawaveAccess
+```
+
+Value
+
+```
+true
+```
+
+Accordingly, if a user has this key (`remnawaveAccess: true`) in their token, they will be authorized.