Remove CodeQL workflow, add GitHub Pages deployment, and update project documentation

- Remove `codeql.yml` workflow for static security analysis.
- Add `pages.yml` workflow for deploying docs to GitHub Pages.
- Introduce `CODE_OF_CONDUCT.md` and `FUNDING.yml`.
- Update `README.md` with links to GitHub Pages and additional project setup details.
- Refine release workflow by splitting build and publish steps, and allowing publish errors for existing versions.

.github/workflows/ci.yml

@@ -6,7 +6,6 @@ on:
   pull_request:
     branches: [ main, master ]
 
-# Alte Läufe abbrechen, wenn ein neuer Push kommt (spart Zeit)
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true