[Suggestion] Implement centering text in headings of inventories

[Cirkutry]

Issue

Currently for inventory titles, centering text has to be done by eyeballing the amount of spaces needed to approximately center it.

Suggestion

3 possible implementations:

• A tag <center> / <centre> (accounting for both spelling variants) at any point in the name field of a inventory file will center every character after it.
• A setting center-name/centre-name which replaces name will center the value of key.
• A setting center-name/centre-name set to true will center the value of name key.