CI updates to trigger a tpo/web/community build (#1)

Change GitLab CI/CD configuration to allow deployment under community.torproject.org/onion-services/ecosystem.

.gitlab-ci-pages.yml

-pages:
-  image: debian:bookworm
-  script:
-    - apt-get update
-    - apt-get install -y git
-    - git submodule sync
-    - git submodule update --init --recursive --depth 1
-    - vendors/onion-mkdocs/scripts/onion-mkdocs-provision-build
-    - scripts/compile
-    - vendors/onion-mkdocs/scripts/onion-mkdocs-build
-  artifacts:
-    paths:
-      - public
-  #only:
-  #  - main