Добавить двуязычную документацию (русский и английский) (#1101)

docs/EN/TrayConfig.md

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+# Tray Application Configuration Files
+
+The tray application stores data in:
+
+- **Windows:** `%APPDATA%/TgWsProxy`
+- **macOS:** `~/Library/Application Support/TgWsProxy`
+- **Linux:** `~/.config/TgWsProxy` (or `$XDG_CONFIG_HOME/TgWsProxy`)
+
+```json
+{
+  "host": "127.0.0.1",
+  "port": 1443,
+  "secret": "...",
+  "dc_ip": [
+    "2:149.154.167.220",
+    "4:149.154.167.220"
+  ],
+  "verbose": false,
+  "buf_kb": 256,
+  "pool_size": 4,
+  "log_max_mb": 5.0,
+  "check_updates": true,
+  "cfproxy": true,
+  "cfproxy_user_domain": "",
+  "cfproxy_worker_domain": "",
+  "force_test_dc": false,
+  "appearance": "auto"
+}
+```
+
+The `check_updates` key: when `true`, performs a request to GitHub and compares the current version with the latest release (notification and link to download page only).  
+On Windows, the config may contain `autostart` (auto-start on system login).