Add 'environment' package

This commit adds a new environment package that manages all calls to the
underlying operating system.

TODO.md

@@ -5,12 +5,10 @@
   - Why a factory?
   - First steps after provisioning
 
-
+- Use `environment.Dial()` and `environment.Listen()`
 - Move `provision_entrypoint.sh` into go
 - Enhance Snapshots
     - Export the Docker Images
 - Avoid running `docker compose` executable and shift it to a library
 - Move resolver code into this
-- Cleanup code: Have consistent error handling
-- Add a proper metadata / statistics server
 - Single Malt Mode: Support having a single instance only!