Add write-only register

[apcountryman]

Add write-only register.

• [x] libraries/microlibrary/ANY/ANY/include/microlibrary/register.h/libraries/microlibrary/ANY/ANY/source/microlibrary/register.cc (update)
  • [x] Add ::microlibrary::Write_Only_Register template class
  • [x] Add ::microlibrary::Write_Only_Register alias template
• [x] libraries/microlibrary/ANY/DEVELOPMENT_ENVIRONMENT/include/microlibrary/testing/automated/register.h/libraries/microlibrary/ANY/DEVELOPMENT_ENVIRONMENT/source/microlibrary/testing/automated/register.cc (update)
  • [x] Add ::microlibrary::Testing::Automated::Mock_Write_Only_Register template class
• [x] docs/register.md (update)
• [x] The ::microlibrary::Write_Only_Register template class should be defined if MICROLIBRARY_TARGET_IS_DEVELOPMENT_ENVIRONMENT is false
• [x] The ::microlibrary::Write_Only_Register alias template should be defined if MICROLIBRARY_TARGET_IS_DEVELOPMENT_ENVIRONMENT is true
• [x] The ::microlibrary::Write_Only_Register template class should have the following template parameters:
  • [x] typename T: The register's underlying integral type
• [x] The ::microlibrary::Write_Only_Register template class should be packed
• [x] The ::microlibrary::Write_Only_Register template class should have the following member types:
  • [x] using Type = T;: The register's underlying integral type
• [x] The ::microlibrary::Write_Only_Register template class should support the following operations:
  • [x] auto operator=( Type expression ) noexcept -> Write_Only_Register &;
• [x] The ::microlibrary::Write_Only_Register alias template should have the following template parameters:
  • [x] typename T: The register's underlying integral type
• [x] The ::microlibrary::Write_Only_Register alias template should be an alias for ::microlibrary::Testing::Automated::Mock_Write_Only_Register