Description

Add dynamic shape support for leaky_relu/elu/hard_sigmoid/softplus

Type of change

Please delete options that are not relevant and/or add your own.

[ ] My code follows the style guidelines of this project (You can use the linters)
[ ] I have performed a self-review of my own code
[ ] I have commented my code, particularly in hard-to-understand areas and hacks
[ ] I have made corresponding changes to the documentation
[ ] I have added tests to verify my fix or my feature
[ ] New and existing unit tests pass locally with my changes
[ ] I have added the relevant labels to my PR in so that relevant reviewers are notified