feat: force exit insert mode if user is inactive

[csessh]

#111

I added two configuration options: force_exit_insert_mode and max_insert_idle_ms to enable to this feature. Default = false.

return {
    dir = "~/Documents/nvim-plugins/hardtime.nvim",
    dev = true,
    dependencies = { "MunifTanjim/nui.nvim", "nvim-lua/plenary.nvim" },
    opts = {
        force_exit_insert_mode = true,
        max_insert_idle_ms = 3000,
    },
}