add option to allow user to configure floating window

src/jupynium/lua/helpers.lua

@@ -646,9 +646,14 @@ function Jupynium_kernel_hover(bufnr)
 
   local markdown_lines = vim.lsp.util.convert_input_to_markdown_lines(out)
   markdown_lines = vim.lsp.util.trim_empty_lines(markdown_lines)
-  vim.lsp.util.open_floating_preview(markdown_lines, "markdown", {
-    max_width = 84,
-  })
+
+  local opts = { max_width = 84 }
+  local ok, options = pcall(require, "jupynium.options")
+  if ok then
+    opts = vim.tbl_extend("force", opts, options.opts.floating_win_opts.hover)
+  end
+
+  vim.lsp.util.open_floating_preview(markdown_lines, "markdown", opts)
 end
 
 local function get_memory_addr(t)