Function testing

### Is this feature request related to a new or existing Amplify category?

function

### Is this related to another service?

_No response_

### Describe the feature you'd like to request

Ability to quickly test functions

### Describe the solution you'd like

I would like to be able to run:
amplify function test
amplify function test [functionName]

and have all (or just the named) function tests be run remotely (or in mock)

tests would be an input/output json file...and potentially a pre/post setup script

I would also like the option of failing a push if the tests fail...on a per function basis

### Describe alternatives you've considered

This could maybe done with hooks, but I'm not sure it would be straightforward.

### Additional context

_No response_

### Is this something that you'd be interested in working on?

- [ ] 👋 I may be able to implement this feature request

### Would this feature include a breaking change?

- [ ] ⚠️ This feature might incur a breaking change