Speed up container

[gwenwindflower]

This PR:

• removes extension pre-installs for now
• cuts down start up postCreateCommands to pip install and dbt deps
• turns off progress bars for pip install for a little extra cleanliness and speed
• adds Task and Taskfile to manage basic tasks like build and initialization with YAML conifg
• most importantly: prebuilds a year of data as csvs and uses external sources in duckdb to avoid the data building and loading stage at startup. this can be done manually later.