Changing `onyo.assets.name-format` while having assets does not rename assets

[nhjjr]

When changing the keys that the asset filename is constructed of, the change is not applied to all assets. Furthermore, it now becomes impossible to edit assets using the old filename scheme.

For example, the .owned suffix was changed to .basegame (i.e., the onyo.asset.filename changed from {shortname} ({year}).{status} to {shortname} ({year}).{type}) resulting in:

❱ onyo edit "7-wonders (2010).owned" 
ERROR: No such asset: /home/niels/onyo/boardgames/7-wonders (2010).basegame
Cancel command (y) or continue editing asset (n)? n

It is furthermore not possible to set the filename by changing the type key:

❱ onyo set -k type=base -p "7-wonder (2010).owned" --rename                                                                                                                                                    1 !
ERROR: The following paths aren't assets:
/home/niels/onyo/boardgames/7-wonder (2010).owned

[TobiasKadelka]

• onyo config should check if it is possible to update the namescheme (e.g. all assets have the fields required for their "new" names) and then all names should automatically change (with a diff-output like for move?).
• onyo fsck needs to check if all assets (if not .onyoignored?) and their names are correct (e.g. filesystem-name aligns with asset contents)
• onyo fsck might offer to update file/dir names if assets contents do not align with asset names (diff needed because not clear which source would contain "the truth")

[aqw]

onyo.assets.filename -> onyo.assets.name-format (#632 #572)