feat: autoreplace (#5529)

lib/manager/common.ts

lib/manager/html/__snapshots__/extract.spec.ts.snap

lib/manager/html/extract.ts

lib/manager/html/index.ts

lib/manager/html/update.spec.ts

lib/manager/html/update.ts

lib/manager/index.ts

lib/workers/branch/auto-replace.ts

lib/workers/branch/get-updated.ts

lib/workers/repository/extract/manager-files.ts

lib/workers/repository/updates/flatten.ts

test/workers/branch/__snapshots__/auto-replace.spec.ts.snap

test/workers/branch/__snapshots__/get-updated.spec.ts.snap

test/workers/branch/auto-replace.spec.ts

test/workers/branch/get-updated.spec.ts

...pository/extract/__snapshots__/manager-files.spec.ts.snap

test/workers/repository/extract/manager-files.spec.ts