Replace externals with Conan (#3735)

* Remove git submodules that will be loaded through conan

* Move custom Find modules to their own folder

* Use conan for downloading missing external dependencies

* CI: Change the yuzu source folder user to the user that the containers run on

* Attempt to remove dirty mingw build hack

* Install conan on the msvc build

* Only set release build type when using not using multi config generator

* Re-add qt bundled to workaround an issue with conan qt not downloading prebuilt binaries

* Add workaround for submodules that use legacy CMAKE variables

* Re-add USE_BUNDLED_QT on the msvc build bot

src/web_service/CMakeLists.txt

@@ -8,4 +8,4 @@ add_library(web_service STATIC
 )
 
 create_target_directory_groups(web_service)
-target_link_libraries(web_service PRIVATE common json-headers httplib lurlparser)
+target_link_libraries(web_service PRIVATE common nlohmann_json::nlohmann_json httplib lurlparser)

src/web_service/telemetry_json.cpp

@@ -2,7 +2,7 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
-#include <json.hpp>
+#include <nlohmann/json.hpp>
 #include "common/detached_tasks.h"
 #include "common/web_result.h"
 #include "web_service/telemetry_json.h"

src/web_service/verify_login.cpp

@@ -2,7 +2,7 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
-#include <json.hpp>
+#include <nlohmann/json.hpp>
 #include "common/web_result.h"
 #include "web_service/verify_login.h"
 #include "web_service/web_backend.h"