Command auto-reloading and snapshotting

[sr229]

This is a new specification for Clara's Command Holder. Designated as Command Holder Revision 3 slated for 0.5.0 Sparkling Satania.

The Autoreload system

The command holder inspects a command folder's contents and if it sees a file change on the main file or it's dependents, it enforces a hot auto-reload. This should be only logged at the console and silent from the Discord side.

Snapshot system

This is in par with the autoreload system. once the CommandHolder detects there is a file change, it quickly saves the previously-loaded command object and "snpashots" it and stores on a volatile storage. It has two conditions, if the newer command object successfully inits and works without errors, the snapshotted object is discarded however if the newer command object fails to load properly, the Command Holder has to use the "last known good snapshot" of the command object.

[sr229]

Please be noted we'll handle the snapshots under a different class named Snapshotter. This would be the module that the CommandHolder would dump the previous version of the command object after it has hot reloaded the latest revision. Only allow one copy of the object per command