Add CodeQL, Codecov, Codacy and actionlint

- CodeQL analyses the workflows and the TypeScript and Vue sources with
  the security-extended queries, on every push to main, every pull
  request and once a week.
- The tests run under c8, and a job of its own uploads the lcov report
  to Codecov through OIDC, away from the job that installs packages.
- .codacy.yml leaves out what is generated and what is copied from
  Progmasoft/tazel and Progmasoft/tala.
- actionlint joins zizmor in Workflow Security.
- CI Required gathers the site job and Dependency Review, so a ruleset
  can require one check.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

0 files changed, 0 insertions, 0 deletions