Read the next byte received from the server the client is connected to (after the last call to
// SYNTAX client.read();
Returns the next byte (or character), or -1 if none is available.
int read(uint8_t *buffer, size_t size) reads all readily available bytes up to
size from the server the client is connected to into the provided
// SYNTAX bytesRead = client.read(buffer, length);
Returns the number of bytes (or characters) read into