Add deployment pipeline and clean up repo

- Add Dockerfile, docker-compose.yml, .dockerignore, .env (port 3842)
- Add Caddyfile.snippet for analytics gateway import pattern
- Add .gitea/workflows/deploy.yaml for act_runner SSH deploy
- Untrack sensitive/data files (SCPA xlsx, owners.rds)
- Add renv lockfile and infrastructure files
- Reorganize data-raw scripts and add SarasotaCounty boundary data
- Move www assets to www/images/, add docs PDFs

stAndrews.Rproj

@@ -1,5 +1,5 @@
 Version: 1.0
-ProjectId: c59d4069-2369-4870-a54f-b22df07f3e3e
+ProjectId: ab728b89-b094-4c83-8cc4-50bda69048f8
 
 RestoreWorkspace: Default
 SaveWorkspace: Default