* Manually including libraries into the project while a perfectly acceptable solution
leads to slow updates and large maintainance costs. To address this
shortcoming we are introducing a package manager namely vcpkg into the
codebase to handle the download and build of most external dependencies. Conan
was also considered but vcpkg was chosen due to the centralized nature
of the project. To achieve the integration the CMake configuration has
been altered but not by much:
1. Packages handled by vcpkg have been moved from
externals/CMakeLists.txt to the root one to make them available to
all subdirectories.
2. In addition now find_package is used in accordance to the vcpkg
recommendations.
3. All libraries built by vcpkg have been updated to their latest
available version, except for Qt because our codebase isn't
compatible with Qt 6.0 yet.
Currently there are build issues caused by the fmtlib upgrade.
Another question is how to handle large libraries like Qt, Boost and
SDL2 which will be addressed in a later commit.
The `Register()` function can now handle error results and the error will be passed immediately to the Qt frontend, instead of being ignored silently and failing later with a "Room is not registered".
* Change authentication system to JWT
* Address review comments
* Get rid of global variable, fix some documentations, fix a bug when verificating
* Refactor PostJson to avoid code duplication
* Rename jwt_token, add functionality to request a new JWT when getting a 401
* Take bools by value instead of const reference
* Send request again when JWT is invalid and use forward declarations
* Omit brackets
json.hpp wants it, but it isn't always available. Rather than patch
json.hpp directly to remove the dependency, provide a json.h wrapper
header that subs in std::experimental::string_view using preprocessor
magic. All the consumers of json.hpp are in src/web_service, so the
wrapper header is placed there as well.
