Unofficial VCF for Feature Test

Just a review pre-release for added features.

Not intended for wide distribution or Thunderstore yet.

Notes:

• _remainder parameter to capture all trailing input for a command.
• Command history now persists to disk and autoloads on first use.
• When multiple overloads match, users get a selection list instead of first-match execution.
• Registry and help use assembly names (strings) instead of Assembly references.
• Command history storage is keyed by ICommandContext.Name for easier testing and non-chat contexts.

Fixed:

• History repeat executes with the current context instead of a stale one.
• Duplicate command+args entries are not stored.

Edit:

• Update check added on admin auth.
• Admin only .version to do a quick spit out of all current mod versions.