Evaluate lib size for all packages used in serverless

In making the aio-lib-env library work with webpack and serverless actions I noticed some size issues.
This is not a reflection of aio-lib-env, just the way npm packages work ...
aio-lib-env is used as an example because it is probably our smallest module, 74 LOC including license header
BundlePhobia reports it has a minified size of 348.4 kB [1]

# Adding to an action

### a simple action with a dependency on node-fetch and nothing else:

du -sh dist/actions/list-temp
384K dist/actions/list-temp
du -sh dist/actions/list.zip
180K dist/actions/list.zip

### add + build
`const { getCliEnv, DEFAULT_ENV } = require('@adobe/aio-lib-env')` and `console.log('getCliEnv => ', getCliEnv())`

du -sh dist/actions/list-temp
1.3M dist/actions/list-temp
du -sh dist/actions/list.zip
388K dist/actions/list.zip

Most of this is probably the logging lib, which includes winston, ... but the simple fact that this lib is so small really shows the point.

### An action that uses aio-sdk only

`const { Core } = require('@adobe/aio-sdk')`

du -sh dist/actions/list-temp
6.5M dist/actions/list-temp
du -sh dist/actions/list.zip
1.4M dist/actions/list.zip

### Adding back @adobe/aio-lib-env has no effect if @adobe/aio-sdk is already there ...

du -sh dist/actions/list-temp
6.5M dist/actions/list-temp
du -sh dist/actions/list.zip
1.4M dist/actions/list.zip

[ 1 : bundlephobia aio-lib-env](https://bundlephobia.com/result?p=@adobe/aio-lib-env@1.0.0)

Start by reproducing the recorded du measurements for the simple node-fetch action, the aio-lib-env action, and the @adobe/aio-sdk-only action. Compare the resulting temporary and zipped sizes and identify the package dependencies contributing to the increase; done means documenting the size impact for the packages used in serverless actions.

Written by the indexing model from the issue text.