* [arg-router] Update to v1.2.0
Bug fixes
* Issue 254, passing no args to short_form_expander_t::pre_parse_phase(..) causes segfault
* Issue 255, policy_unique_from_owner_parent_to_mode_or_root not working
Improvements
* Corrected CMake package so you don't need to manually set the include directory anymore (Issue 257)
* Node can be instantiated with bare compile-time strings and they are automatically mapped to the appropriate policy (Issue 256)
* Improved help output formatting documentation (Issue 258)
* Removed invalid dependency from usage file
* Used CONFIG_PATH in vcpkg_cmake_config_fixup()
* Replaced lost newline
* [arg-router] Add new port
https://github.com/cmannett85/arg_router
* [arg-router] Use VERSION CMake var
* [arg_router] Do not copy README and LICENSE to share dir
* Add quotes.
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Co-authored-by: Billy Robert O'Neal III <bion@microsoft.com>