Add specific warning when trying to delete entity on full hub space platform

[Yonninout]

I experience something that i thought was a bug but it was just a simple logistic problem here :
viewtopic.php?f=7&t=125156&p=655674#p655674

The fact is that i send to much stuff on my platform and I wanted to clean all the stuff on the platform to start from scratch my design.
I wasn't able to delete all the platform tile as my Hub was full.

Maybe i can be nice to have a warning saying "entity canot be deleted as Hub is full" like the warning when trying to construct something and bot or entity is missing.

[Yonninout]

It already exist

[Koub]

[Koub] Moving to Implemented then.