support multiple modes for same key of lazyload

[XXiaoA]

Describe the feature

According to my test, we must do the duplicated things like this:

use({
    "phaazon/hop.nvim",
    keys = {
        { "o", "t" },
        { "o", "T" },
        { "o", "f" },
        { "o", "F" },
        { "x", "t" },
        { "x", "T" },
        { "x", "f" },
        { "x", "F" },
        { "n", "t" },
        { "n", "T" },
        { "n", "f" },
        { "n", "F" },
    },
})

I hope we can make it easier like this:

keys = {
        {  { "o", "x", "n"  }, "t" },
    }

I've search other issues, discussions and docs but dont find some means to do it. Hope I didn't ignore something. 😄

[lewis6991]

Relates to #1063

[XXiaoA]

ok, waiting for merging the PR