Provide incremental text content searcher

[kachick]

https://github.com/junegunn/fzf/blob/c3505858a6764193e1948fd4423b92d7b379b255/README.md#3-interactive-ripgrep-integration
https://github.com/junegunn/fzf/blob/c3505858a6764193e1948fd4423b92d7b379b255/ADVANCED.md#using-fzf-as-interactive-ripgrep-launcher

Helix's / doesn't incremental run

helix-editor/helix#9672 (comment)

https://www.reddit.com/r/commandline/comments/fu6zzp/search_file_content_with_fzf/

Also want this in #729, zk looks providing it in fzf integration. But it does not highlight the bat preview window

https://zoshigayan.net/ripgrep-and-fzf-with-vim/

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But it is not the right tool for searching for text inside many large files, and in that case you should definitely use something like Ripgrep.

💭 This comment prevents my mistaken actions