* [localization 1/n] First minor changes, mostly additive
Additionally, convert vcpkg.cpp over to using messages.h
* oops, forgot to initialize the context
also, build on msvc & gcc 6
* add cgmanifest and NOTICE
* Add support for signing with fmt
* switch to MAXDWORD
* add localization file
* turn `find_package(fmt)` into a Findfmt script
* check sha
* Raise default locale initialization above filesystem access
* Avoid O(N^2) on happy path
* Address CR comment on formatter<vcpkg::StringLiteral>
Co-authored-by: Robert Schumacher <roschuma@microsoft.com>