Allow custom floating window style

[SheffeyG]

This change allow users to custom floating window like #685, so we can configure it as:

floating = {
    width = 0.5, -- percentage
    height = 30, -- row
    border = "single",
    ...
}

[CKolkey]

Nothing against this, I just am taking a break from programming due to newborn twins.

[SheffeyG]

@CKolkey No worries! It's just that Noegit is one of the most powerful and extensive plugins I've used, and adding this config could involve other changes. Recently, I've been using more auto instead of float in my setup, but I will find another time to fix the type-checking issues and moving this feature on. Anyway, congratulations to you 🎉 and take your time, memories with baby twins are priceless!

P.S. This plugin has helped me a lot, and I've learned many Git commands from it. Thanks for all your hard work!

[CKolkey]

Thanks for your contribution :)