Introduce crash_dump debugging helper.

private/access_vectors

private/domain.te

private/file_contexts

private/security_classes

private/system_server.te

private/tombstoned.te

public/adbd.te

public/app.te

public/crash_dump.te

public/debuggerd.te

public/domain.te

public/domain_deprecated.te

public/dumpstate.te

public/file.te

public/logd.te

public/su.te

public/system_server.te

public/tombstoned.te

public/webview_zygote.te