Add support for sdg-svc jobs

[nerdalert]

• [x] Still needs to get ENVs for:

            "--tls-client-cert", "client-tls-crt.pem2",
            "--tls-client-key", "client-tls-key.pem2",
            "--tls-server-ca-cert", "server-ca-crt.pem2",

• [x] Scrub any logging with keys

[nerdalert]

Run with:

instruct-lab-bot-worker generate --github-token <TOKEN> \
--redis redis:6379  --s3-bucket brent-instruct-lab-dev \
--endpoint-url https://<MODEL_ENDPOINT> \
--aws-region us-east-1 \
--sdg-endpoint-url https://<SDG_BACKEND>

Cert files default to the worker CWD or can be specified via CLI.

[russellb]

lgtm, but we can't deploy this to prod until this CLI PR merges: https://github.com/instruct-lab/cli/pull/833