feat(precognition): add line wrapping for virtual lines

This commit introduces a new feature where if the 'wrap' option is enabled
and the virtual line length exceeds the window width, the virtual line is
subdivided into sections. The section that contains the cursor is then
displayed.

lua/precognition/init.lua

@@ -267,6 +267,17 @@ local function display_marks()
 
     -- TODO: can we add indent lines to the virt line to match indent-blankline or similar (if installed)?
 
+    if vim.opt.wrap and #virt_line > 0 then
+        local width = vim.go.columns - vim.go.numberwidth - 1
+        local cursorcolpos = vim.api.nvim_win_get_cursor(0)[2] + 1
+        local section = math.floor(cursorcolpos / width)
+        local start = section * width
+        local end_ = start + width
+        if #virt_line[1][1] > width then
+            virt_line[1][1] = string.sub(virt_line[1][1], start, end_)
+        end
+    end
+
     -- create (or overwrite) the extmark
     if config.showBlankVirtLine or (virt_line and #virt_line > 0) then
         extmark = vim.api.nvim_buf_set_extmark(0, ns, cursorline - 1, 0, {