Chore/env settings

Adding the interpolate of environment variables prefixed with MINDS_ENV_ with the rest of the key mapping to the corresponding keys. For those lovely nested arrays, you can use __ to map to multi dimensional arrays that get recursively merged. MINDS_ENV_twilio__account_sid Cli and Start.php both load .env files and so we can control our dev environments with those

Closes #1272 (closed)

Testing steps.

With the helm-chart helm-charts!35 (merged) applied and the appropriate secrets created in kubernetes, go to this review site.

Also, you can try embedding rich media for iframely keys. That's also managed by secrets

Validate any user with twilio / via sms. It should verify your phone number. Those twilio settings are managed by secrets and envs.