feat(cli): add settings menu and VLESS log viewer with core selection

- Add settings menu to switch between Xray and V2Ray cores for VLESS connections
- Implement core type persistence in configuration with LoadSettings/SaveSettings
- Add VLESS error and access log viewer showing last 30 and 20 lines respectively
- Display current core type and system time in main menu
- Update VLESS connection to use selected core dynamically
- Refactor monitor.go to accept 'q' key input for graceful exit instead of signal handling
- Add proxy platform-specific implementations (proxy_unix.go, proxy_windows.go)
- Add downloader module for managing binary resources
- Include V2Ray and Xray configuration files and geodata (geoip.dat, geosite.dat)
- Update CLI imports to include path/filepath and time packages
- Improve user experience with core selection visibility and log diagnostics

v2ray/vpoint_vmess_freedom.json

@@ -0,0 +1,32 @@
+{
+  "inbounds": [{
+    "port": 10086,
+    "protocol": "vmess",
+    "settings": {
+      "clients": [
+        {
+          "id": "23ad6b10-8d1a-40f7-8ad0-e3e35cd38297",
+          "level": 1,
+          "alterId": 64
+        }
+      ]
+    }
+  }],
+  "outbounds": [{
+    "protocol": "freedom",
+    "settings": {}
+  },{
+    "protocol": "blackhole",
+    "settings": {},
+    "tag": "blocked"
+  }],
+  "routing": {
+    "rules": [
+      {
+        "type": "field",
+        "ip": ["geoip:private"],
+        "outboundTag": "blocked"
+      }
+    ]
+  }
+}