Several updates to improvements and overall QOL features for users:

• Added sub-folder support for content folders - this enables a lot of use cases for reusing content.
• Major code reorganization to clean up the top level of the repository
• Added install script to handle python virtual environment setup and simplify the overall process.
• Added all new documentation on setup and install process: https://github.com/shane-mason/FieldStation42/wiki
• If station runtime directories don't exist, the scheduler will attempt to create