* ci: reduced build on pushes to master and stable in forks
* ci: test retry message only when retrying
* ci: pull request changes against the current base
* ci: deploy the website only from simplex-chat/simplex-chat
* ci: reduced build of changed scopes on drafts and manual runs
* ci: tests only when selected in reduced builds
* ci: test selection and retries in scripts/ci/run-tests.sh