Add Image Scraping for Announcements

[8figalltimepro]

feat: Add Image Scraping for Announcements

Description:
The current announcement parser successfully scrapes text content and file download links. However, some announcements may contain embedded images. This feature will enhance the parser to also extract the URLs of these images.

Acceptance Criteria:

• Investigate and confirm the method used to load images in announcements on the live site.
• Update the _AnnouncementPageHandler to find and extract the src attribute from any <img> tags within an announcement's content.
• Ensure the extracted img(Base64) is stored correctly in the image attribute of the Announcement model.

[apatelpiyush]

I wanna contribute for this project