[cli] Provide way to skip bundling for lambda-nodejs

### Use Case

aws-lambda-nodejs uses parcel for bundling a function's code. Anytime we need to run `diff` or `deploy` command whether we made changes or not, parcel will do a build for all functions registered. If you're just making changes to other infra in the stack, this gets annoying.

### Proposed Solution

Provide a cli flag to the diff and deploy commands that allows skipping the bundle step.

* [x] :wave: I may be able to implement this feature request
* [ ] :warning: This feature might incur a breaking change

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This is a :rocket: Feature Request

Start with the CLI handling for the diff and deploy commands and the aws-lambda-nodejs Parcel bundling path. The change is done when both commands provide a way to skip bundling while preserving their existing behavior by default; the issue does not name specific files or tests to run.

Written by the indexing model from the issue text.