fix: mini.statusline colors, cursorcolumn and signcolumn linking with cursorline and cursorlinenr

[231tr0n]

Changes for ministatusline and linking cursorcolumn and signcolumn to LineNr

on_highlights = function(highlights, colors)
        -- Ministatusline changes
        highlights.MiniStatuslineDevinfo = { fg = colors.fg_dark, bg = colors.fg_gutter }
	highlights.MiniStatuslineFileinfo = { fg = colors.fg_dark, bg = colors.fg_gutter }
	highlights.MiniStatuslineFilename = { fg = colors.fg_dark, bg = colors.bg_highlight }
        -- cursorcolumn and signcolumn linking to lineNr
	highlights.SignColumn = { link = "LineNr" }
	highlights.FoldColumn = { link = "LineNr" }
        highlights.CursorLineFold = { link = "CursorLineNr" }
        highlights.CursorLineSign = { link = "CursorLineNr" }
end

MiniStatusline

Without the Ministatusline changes the statusline looks something like this With the changes of Ministatusline it looks something like this

SignColumn and FoldColumn changes

Without the signcolumn and foldcolumn changes the column looks something like this With the signcolumn and foldcolumn changes the column looks something like this

[231tr0n]

@folke, sorry for this ping and hope I am not being rude but I wanted to know if there was any chance of this PR getting merged since this fixes issues with sign and fold column highlighting and mini.statusline.