* Send message to Java if command is Bedrock-only
If a Java player attempts to use a Bedrock-only command, such as `geyser statistics`, they will get an error message stating that this command is only for Bedrock players.
This commit also cleans up Velocity Adventure dependency usage. Issues were caused because of the way relocation works and because Velocity also uses Adventure.
* Only look for a session if we have to
* Update languages submodule
* Downgrade reflections to 0.9.11
* Add comment explaining downgrade
* Move to pre-build reflections
* Update skins to use https and relative cache dir
* Move to https OptiFine cape url
* Add javadoc to isProduction
* Add ANDROID as a platform type
* Re-ordered PlatformType
* Change stop command to call onDisable