sys: Get rid of SharedData struct and cleanup code structure (#411)

* sys: Initial refactoring of the SharedData class

* sys/pattern: More refactoring, make every provider have its own patterns

* sys: Finished up refactoring. No more SharedData!

* sys: Fixed compile on Unix

* tests: Fixed unit tests

* sys: Moved view and lang files

* pattern: Added assignment operator support to for loops

* tests: Fixed compile issue

plugins/example_cpp/source/plugin_example.cpp

@@ -1,6 +1,6 @@
 #include <hex/plugin.hpp>
 
-#include <hex/views/view.hpp>
+#include <hex/ui/view.hpp>
 
 class ViewExample : public hex::View {
 public: