feat: enhance crawler endpoint and email notification localization

- Added optional parameters `email` and `language` to the crawler endpoint for improved user notifications.
- Updated documentation in `crawler_endpoint.md` to reflect new parameters and enhance clarity.
- Improved email notification content in both English and Farsi localization files to include the application name "Hatef" for better branding.
- Enhanced email subject localization to dynamically include the number of pages indexed, improving user engagement.

These changes significantly improve the user experience by providing localized notifications and clearer documentation for the crawler API.

Author: Hatef-Rostamkhani

.husky/pre-commit

@@ -0,0 +1,5 @@
+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+npm run format:check
+npm run validate-schema

docs/api/crawler_endpoint.md

@@ -47,18 +47,18 @@ Add a new site to the crawl queue with optimized SPA rendering.
 
 #### Parameters
 
-| Parameter             | Type    | Default                   | Description                                         |
-| --------------------- | ------- | ------------------------- | --------------------------------------------------- |
-| `url`                 | string  | **required**              | Seed URL to start crawling                          |
-| `maxPages`            | integer | 1000                      | Maximum pages to crawl                              |
-| `maxDepth`            | integer | 5                         | Maximum crawl depth                                 |
-| `email`               | string  | (optional)                | Email address for completion notification           |
-| `language`            | string  | "en"                      | Language for email notifications (en, fa, etc.)     |
-| `spaRenderingEnabled` | boolean | true                      | Enable SPA rendering                                |
-| `includeFullContent`  | boolean | false                     | Store full HTML content                             |
-| `browserlessUrl`      | string  | "http://browserless:3000" | Browserless service URL                             |
-| `timeout`             | integer | 15000                     | Request timeout in milliseconds                     |
-| `politenessDelay`     | integer | 500                       | Delay between requests in milliseconds              |
+| Parameter             | Type    | Default                   | Description                                     |
+| --------------------- | ------- | ------------------------- | ----------------------------------------------- |
+| `url`                 | string  | **required**              | Seed URL to start crawling                      |
+| `maxPages`            | integer | 1000                      | Maximum pages to crawl                          |
+| `maxDepth`            | integer | 5                         | Maximum crawl depth                             |
+| `email`               | string  | (optional)                | Email address for completion notification       |
+| `language`            | string  | "en"                      | Language for email notifications (en, fa, etc.) |
+| `spaRenderingEnabled` | boolean | true                      | Enable SPA rendering                            |
+| `includeFullContent`  | boolean | false                     | Store full HTML content                         |
+| `browserlessUrl`      | string  | "http://browserless:3000" | Browserless service URL                         |
+| `timeout`             | integer | 15000                     | Request timeout in milliseconds                 |
+| `politenessDelay`     | integer | 500                       | Delay between requests in milliseconds          |
 
 #### Response