fix server print error

Added account verification. This button is available in the add -on settings menu.

media player and radio update

New CVARs added:
SERVER:
- sv_rgc_sync_entities_view_other - If the option is enabled, you will see entities that spawn other players.
- sv_rgc_sync_entities_spawn_other - If enabled, you will spawn objects in the world of the player you connected to. IMPORTANT: YOUR ENTITIES WILL REMAIN IN THE OTHER PLAYER\'S WORLD.

CLIENT:
cl_rgc_visible_rgc_prefix - If enabled, there will be a prefix [RGC] in front of the nickname
cl_rgc_visible_chat_name - If enabled, the name of the chat room you are currently in will be shown before the nickname.
cl_rgc_visible_player_id - If active, you will see the player\'s ID. It\'s a number like this - #123.

All settings can be customized in the addon settings menu!

Fix media player and 3d stream radio update media

fix media player and stream radio priority

- The props are now syncing materials and colors
- Added Media Player support

- The movement of synchronized props has been improved
- Improved output of messages in chat about entering and leaving the world
- Added the postscript "HOST" under the nickname of those whose world you have entered
- The command "/rgcleaveworld" has been added to exit the world