How to create a layer without an Input.

Hi,

In deep rl algorithm like PPO, a continuous stochastic policy is represented by Normal Distribution. For this the recommended way of creating a Normal Distribution is to get the mean by passing the state through NN and then using a state independent layer to predict log_std. This layer which predicts log_std should be trainable using backprop just like biases. So how to create this layer in tensorflow 2.