Made move command

[auuruum]

Added a !move command to move players between voice channels.

• Use !move [users] [channel] to move specified users to a voice channel.
• If no users are mentioned, it tries to find the Discord ID of the user who used the command from a credentials folder and move them (if they are in a voice channel).
• When searching users by partial names, priority is given to users currently connected to a voice channel.
• The last argument is always the target voice channel (by name or ID).
• Shows error messages if users or channels aren’t found or users are not in voice channels.

Examples:

• !move aurum voice1 — moves user "aurum" to "voice1" channel
• !move au voice1 — searches for user starting with "au", prioritizing users in voice channels, then moves them to "voice1"
• !move voice1 — moves the command user by looking up their Discord ID from the credentials folder