Feat: Allow using the `searchcount` component with `hlsearch` disabled

[itaranto]

Requested feature

I'd like to be able to use the searchcount component with hlsearch disabled.

Motivation

I'm trying out cmdheight=0 and currently there's no way to display the search count using lualine if don't want to use hlsearch.

[Sam-programs]

u can set hlsearch's highlights to nothing.

-- vim.cmd('colorscheme theme')
vim.api.nvim_set_hl(0,'Search',{})
vim.api.nvim_set_hl(0,'CurSearch',{})