CWD is not set properly

[purplecabbage]

Describe the bug

For any actions that read/write from the file system cwd is mapped to the application dir, meaning wherever the developer typed aio app dev

If an action uses the include directive, it should be able to load these files during run. Currently they are not found because we run in a different dir than the action root.

To Reproduce
Steps to reproduce the behavior:

1. define an action with an include file

include:
  - ['actions/included/includeMePlease.txt']

2. try to open and read the file in your action

const message = fs.readFileSync('./includeMePlease.txt', 'utf8')

Expected behavior
File is read, and text is output either to console, or returned.

Actual Behavior
crash ...
ENOENT: no such file or directory, open './includeMePlease.txt'

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
Add any other context about the problem here.

[aiojbot]

JIRA issue created: https://jira.corp.adobe.com/browse/ACNA-3186

[purplecabbage]

pr #109