hot reload

[Ryze0323]

Description

Added a hot reload function that retrieves the latest source code except for node_modules in the require cache when loading.

Motivation and Context

In case of serverless offline, it is necessary for fast development

How Has This Been Tested?

We confirmed quick reflection by actually connecting offline and modifying the source.

Screenshots (if appropriate):

[andriesss]

Can this be merged?

[ps2-controller]

@Ryze0323 / @duplow , any chance this ties into my hot reload issue?

https://github.com/dherault/serverless-offline/issues/1782

[ps2-controller]

Update - it does not seem to resolve my hot reload issue :(