build: migrate from master branch to main (#8663)

.github/ISSUE_TEMPLATE/bug_report.md

.github/auto-cancel-actions.yml

.github/contributing.md

.github/label-actions.yml

.github/prettifier.yml

.github/pull_request_template.md

.github/workflows/build.yml

.github/workflows/codeql-analysis.yml

.github/workflows/ws_scan.yaml

.releaserc

docs/development/design-decisions.md

docs/development/local-development.md

docs/development/triage-guide.md

docs/usage/dependency-pinning.md

docs/usage/self-hosting.md

readme.md