Enabled the LDC function on the web page.

Improvements

1. Enhanced the firmware upgrade progress experience.
2. Enabled the LDC function on the web page.
3. Added RTC (Real-Time Clock) check.

Known Issues

1. We recommend using the Chrome browser for configuring webpages.
2. When using NDI video theme mode, the USB video stream will be temporarily
   paused in order to ensure the best possible NDI HX3 video streaming experience.
3. HTTPS: Enable HTTPS to establish a secure connection between the browser and
   the camera. To enable HTTPS, please follow the steps below.
   A. Obtain an SSL certificate in base-64 encoding format for encryption and
   decryption, and a private key in PKCS#8 format (must be unencrypted).
   B. Convert the required certificate content into PEM format. The SSL certificate
   uploaded to the camera must be in PEM format.
   C. In the HTTPS settings field, select "On", then click "Choose File" to select the
   certificate file, and then click "Upload".