renderer_vulkan: Add vulkan initialization code (#6620)

* common: Move dynamic library to common

* This is so that video_core can use it

* logging: Add vulkan log target

* common: Allow defered library loading

* Also add some comments to the functions

* renderer_vulkan: Add vulkan initialization code

* renderer_vulkan: Address feedback

src/common/logging/backend.cpp

@@ -234,6 +234,7 @@ void DebuggerBackend::Write(const Entry& entry) {
     CLS(Render)                                                                                    \
     SUB(Render, Software)                                                                          \
     SUB(Render, OpenGL)                                                                            \
+    SUB(Render, Vulkan)                                                                            \
     CLS(Audio)                                                                                     \
     SUB(Audio, DSP)                                                                                \
     SUB(Audio, Sink)                                                                               \