Easier configuration of limits' permissions

[barpec12]

Description

Is your feature request related to a problem?

Every block and entity needs to have separate upgrade permission, which makes adding those permissions to groups very time consuming and unnecessary. Let's say we have 3 groups - 3 permission levels of upgrades and 10 blocks. That gives us 30 permission records to add.

Describe the solution you'd like us to implement.

Right now assigning permissions for entity or blocks limits is done using following scheme: bskyblock.upgrades.limitsupgrade-hopper.2
I am proposing making additional possibility - permission like bskyblock.upgrades.limitsupgrade-blocks.2,
which will give a group permissions to placing all blocks from config with permission level <= 2.

[Guillaume-Lebegue]

That's a good idea, I plan to add it in the rework.
See #37 .