add: test cases for rcon

internal/pkg/rcon/README.md

@@ -44,17 +44,8 @@ The package expects these environment variables to be set:
 - `RCON_ADDRESS` - The address of the Minecraft server (e.g., "localhost:25575")
 - `RCON_PASSWORD` - The RCON password for authentication
 
-## Methods
+## Testing
 
-- `New(address, password)` - Create a new RCON client
-- `Execute(command)` - Execute a command on the server
-- `SetWeather(weather)` - Set the weather (clear, rain, thunder)
-- `SetTime(timeValue)` - Set the time (day, night, noon, midnight, or numeric)
-- `SetDifficulty(difficulty)` - Set the difficulty level (peaceful, easy, normal, hard)
-- `GetServerInfo()` - Get server version information
-- `Close()` - Close the RCON connection
-- `HealthCheck()` - Verify the connection is working
-- `ExecuteWithTimeout()` - Execute command with timeout
-- `ConnectWithTimeout()` - Connect with timeout
-- `GetEnvCredentials()` - Get credentials from environment
-- `NewFromEnv()` - Create client from environment variables
+`rconmock.go` contains a mock rcon server that accepts and logs requests from the user. It can be configured to return errors, or success (empty body strings). It logs the recieved message bodies.
+
+The protocol is described at https://developer.valvesoftware.com/wiki/Source_RCON_Protocol.