Investigate the use of Import meta and its feasibility for handling env variables

[dweng0]

Summary

We need an approach that allows environment variables to be passed in. This issue tracks looking at import meta as a way of handling the import of env variables, if it is feasible and what work would be required.

• [x] Documentation review
• [x] PoC examples
• [x] Review of PoC examples

[dweng0]

import.meta was not a viable option as it is designed for handling imports (resolves ect).

However, looking at the Quarto documentation. I've done the following:

• Update the script to look for an _environment file (as is specified as the recommended way to add environment files in Quarto).
• Once found, search for keys that start with QREACTO_
• Convert the env key value pairs into an object
• Dump the object onto the window.
• Make it accessible via process.env
• Updated the examples.md file with a usecase