Rewrite start script to include building docs

[ramanxg]

When we start the API locally, it would be helpful to run the command to build docs, so that separate commands don't need to be run every time.

[ChaseC99]

Do you think this would have a significant impact on the time it takes to start up the API?
If you combine these, can you also include a flag so that there's the option to skip the "build docs" steps?

[ramanxg]

I was thinking using a separate command or a flag that can skip the build step. We don't want these constantly built in Lambda. However, it does take only a few seconds to build the docs from scratch.