This patch adds a custom JS Object type that will convert written
properties to their C++ equivalents, reflecting JS writes back
to the debugging session. This is better than a simple proxy because
printing this custom object works as expected because properties
still exist on the object as existing handlers expect.
This implements a dialog that can be used to evaluate a JS expression
in the HackStudio's Debugger context. It also implements simple
C++ Variable <-> JS Value conversion, allowing for JS expressions
to read/write variables in the debugger scope.
Currently, C++ structs are mapped to JS objects by way of a JS proxy,
however this leads to issues when printing, so this will be changed
in a later commit.
This enables the user to view and navigate classes with a TreeView that
is updated by the LanguageServer as it parses the code.
It offers a new neat way to view the project's structure :^)
They were previously stored inside the Locator widget. I moved them to
the globally visible ProjectDeclarations class so they can also be used
by other widgets.
