feat: support for lazy.nvim opts table

[onexbash]

for managing plugins with lazy.nvim it is recommended to use the opts {} table instead of the setup function, because the setup function is automatically called and merged with the opts table if it is present.

This is not supported by alpha-nvim yet. Would be cool to have it as lazy is probably the most used and best package manager for nvim right now.

Reference: https://lazy.folke.io/spec#spec-setup ()

[goolord]

i don't understand, there is a setup function in alpha already so presumably you could just stick the contents of whatever you're passing to setup now to opts and get the behavior you desire with 0 changes to the alpha codebase