How to see and setup keys for insert mode?

[ajaydwarkani]

I want setup the below key mappings in insert mode, how can I achieve this using which-key? Also, how do I list all the key mappings for insert mode or Visual mode?

["kj"] = { "<ESC>", "Exit Insert Mode" },
["<C-s>"] = { "<ESC>:w<CR>", "Save File" },
["<C-q>"] = { "<ESC>:q<CR>", "Quit" },
["<C-w>"] = { "<ESC>:wq<CR>", "Save & Quit" },

[ghost]

I want setup the below key mappings in insert mode

The docs go over how those arguments are structured. As an example:

opts = {
  defaults = {
    mode = { "i" },
    ["kj"] = { "<ESC>", "Exit Insert Mode" },
    ["<C-s>"] = { "<ESC>:w<CR>", "Save File" },
    -- etc.

There's a more coherent example over in the LazyVim config, too.

how do I list all the key mappings for insert mode or Visual mode?

Check the README, under Usage.