support multiple environments

[rjrodger]

we need:

• local - exists already - pure in memory local development - all seneca - no external deps
• sim - simulation of external deps, running local - docker etc - as per dynamodb store tests
• stage - maybe?
• integ - maybe?
• prod - AWS in production

change the repo:
local -> env/local
all the rest go into this env folder

[rjrodger]

https://github.com/nodezoo/monorepo/blob/main/local/dev.js - dev.js is the wrong name
should be start.js

then you have:

• local/start.js
• sim/start.js
• etc.