PresentationCore used to have a module constructor that called SetProcessDpiAware.  Now that DirectWriteForwarder has been split off from the C# piece of PresentationCore, this module constructor lives in DirectWriteForwarder.  Due to this, the call is happening too late.

To fix this, add a module constructor back into PresentationCore via IL Injection.

* Adding InjectModuleInitializer initial targets.

Initial targets copy over ILDAsm, ILAsm, and CoreCLR bits needed to form an ILTools directory.

* Adding initial ILDAsm and ILAsm tasks and DLL assembly/disassembly targets.

* Fixing call to ILAsm to ensure it builds a DLL.

* Fixing up temp location for ILTools

* Updating packages to be RID specific and to use the latest CoreCLR packages from the COreCLR feed.

* Enabling debug in ILAsm so as to add back the Debuggable attribute.

* Switch on or off the Debuggable attribute based on the build configuration.

* Lifting inline tasks into their own code files and replacing the MSBuild based IL manipulation with C# code.

* Removing test project changes

* Fixing module constructor task to append to file.

* Removing setting of RID property as it was affecting obj/bin layout.
Fixing InjectModuleInitializer targets to use a local RID.

* Fixing module constructor creation and adding an option to use .NET Framework or .NET Core ILAsm.  This is because IL tools in .NET Core do not support debug info.

* Adding basic comments.

* Enabling module constructor injection for PresentationCore

* Fixing missing semi-colon from merge

* Creation of satellite assemblies uses PresentationCore.dll as a template to grab assembly attributes from.  Reconstructing the DLL (and injecting the module initializer) is affecting this, so we move the injection to after construction of satellites.

* Always instruct ILAsm to generate debug information, otherwise release won't have PDBs.

* Adding GitHub issue links for IL Tools modifications.
Adding exception handling for FindDotNetFrameworkILToolsTask
Fixing architecture identification (using semantics from Wpf.Cpp.Props)

* Replacing escaping with verbatim literals
Adding returns for error conditions

* Adding DARC dependencies.

* Add coherent parents for IL(D)Asm

* Coherency updates