Suggestion for a "Find in Page" feature to easily search through comments

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**Is your feature request related to a usage problem (not a bug)? Please describe.**
When I'm going through the comments of a video, I get tired reading through so many comments, so I'd like for a "Find in Page" feature to easily search through comments.

**Describe the solution you'd like to see implemented**
On Firefox, when browsing YouTube, one could easily search for a keyword in the comments by pressing Ctrl+F. I'm suggestion for a feature similar to this on FreeTube.

**Describe alternatives you've considered**

**Screenshots**

**Additional context**