Add comment searching support in Bilibili.
When the user clicks the "comment search" button, a modal will open and fetch all comments. The user can then input a keyword to search for specific comments. Once the fetching process is complete, only the comments that include the keyword will be displayed in the modal.
To improve performance and avoid hitting rate limits, currently only 20 pages of comments will be loaded, which is equivalent to 20 * 20 comments, along with a maximum of 3 sub-comments per comment.
MIT