SNOW-1641294: Allow for configurable snowflake.yml files for streamlit deployments #1511

Description

Allow the user to override all values in the snowflake.yml file when running snow streamlit deploy.
Alternatively, allow the user to point at a different project definition.

E.g.

snowflake streamlit deploy --project-definition snowflake-testing.yml
snowflake streamlit deploy --project-definition snowflake-preprod.yml
snowflake streamlit deploy --project-definition snowflake-production.yml

Context

I use a single snowflake account that has 3 separate environments.
When running a streamlit deploy, I want to able to change the name, warehouse, stage, database, role etc of the streamlit app.