Allow arrays of modes and keys

[mintoya]

Contributing guidelines

• I have read CONTRIBUTING.md
• I have read CODE_OF_CONDUCT.md

Module(s)

mini.clue

Description

I think it would be helpful to support arrays in the initialization of the triggers,

would change something like

          { mode = 'n',          keys = "'" },
          { mode = 'n',          keys = '`' },
          { mode = 'x',          keys = "'" },
          { mode = 'x',          keys = '`' },

to this

          { mode = { 'n', 'x' }, keys = { "'", '`' } },

[echasnovski]

Thanks for the suggestion!

I did think about allowing array for mode since the recommended setup is too verbose (which might look intimidating for new users). This now matters more with presence of MiniMax.

Not sure if allowing keys to be an array is a good idea, since it deviates from how vim.keymap.set() operates. Maybe.

I'll think about it.