Add Player#give

[masmc05]

Closes #11921

Adds a new method that follows full vanilla inventory logic, like first trying to put in main hand, then in off hand, then in the rest inventory. It's also a utility method that supports dropping items if they did not fit to ensure that items are not lost.

[Doc94]

this not require the update container like the give command?

[masmc05]

No, broadcast changes is triggered anyway every https://docs.papermc.io/paper/reference/world-configuration#tick_rates_container_update ticks, and usually api doesn't manually trigger updates unlike vanilla, letting it be tracked by tick methods

[lynxplay]

To note for tomorrows review/merge, leftovers are scuffed in creative as the method obviously doesn't drop for creative mode players.
This, I'd argue, is perfectly fine tho given this is supposed to be exactly like vanilla.