Add support for enabling i386 architecture

[atc0005]

Changes

• update lint-and-build-using-make.yml workflow
  • add enable-i386-architecture input, default false
  • add workflow step to add i386 architecture
• update scheduled-monthly.yml
  • add makefile-build-all input, default true - this was previously hardcoded to true, now customizable from called workflows
  • add makefile-enable-i386-architecture input, default false
  • this is new, used to accept desired value from dependent projects otherwise defaults to previous behavior

References

• atc0005/safelinks#325