refactor: apcd-cms to apcd_cms

Overview

Rename apcd-cms to apcd_cms.
Preserve Docker project name via .env.

(archived comments)

> **⚠️ Important** > - To **build** _before_ merge, use [`apcd-cms-with-_.yml`](https://github.com/TACC/Core-CMS-Custom/actions/workflows/apcd-cms-with-_.yml) workflow. > - To **deploy**, use [TACC/Core-Portal-Deployments#48](https://github.com/TACC/Core-Portal-Deployments/pull/48). > ^{I [built](https://github.com/TACC/Core-CMS-Custom/actions/runs/10150668014) and [deployed](https://jenkins.portals.tacc.utexas.edu/job/Core_Portal_Deploy/658/) to dev server on 2024-07-29.}

all other projects using _cms
similar to #280
completes #277
required by https://github.com/TACC/Core-Portal-Deployments/pull/48

Changes

renamed apcd-cms to apcd_cms
added .env

Testing

Be in root dir.
Check out default branch. git checkout main
Enter original APCD dir. cd apcd-cms
Stop running containers. make stop
Return to root dir. cd ../
Check out this branch. git checkout refactor/apcd-cms-to-apcd_cms
Copy secrets and settings to renamed APCD dir. cp apcd-cms/src/taccsite_cms/*.py apcd_cms/src/taccsite_cms/
Rename custom/local settings. Find/Replace from apcd-cms to apcd-cms in apcd_cms/src/settings_*.py
Enter renamed APCD dir. cd apcd_cms
Start existing containers. make start
Enter container. docker exec -it core_cms /bin/bash
Collect static assets. python manage.py collectstatic --no-input
Test /register/request-to-submit/.
- Verify logo loads from apcd_cms (not apcd-cms).
- Verify page-specific template and CSS both load.