feat(extra): fzf color scheme

[andis-sprinkis]

Styled according to how fzf looks with vscode.nvim colors applied according to a snippet from the fzf-lua plugin docs: https://github.com/ibhagwan/fzf-lua/blob/86b77a661ff38bf08b1ceb5a6c3c257285a42a4d/doc/fzf-lua.txt#L810C1-L810C26