Upgrade MobileUO to CUO version 1.0.0.0

[mandlar]

https://github.com/VoxelBoy/MobileUO/issues/24

This PR is bringing CUO up to version 1.0.0.0. This build seems stable in both Unity Player and my Android phone from my testing. Again, there could be issues that I haven't noticed.

The biggest change of this version is the re-structuring of the solution files due to CUO upgrading to .NET Core.

Changes since 1.0.0.0 PR: https://github.com/mandlar/MobileUO/compare/2b5a9bcf...635ee1c2

• I added some powershell scripts to help speed up the process of re-creating symlinks when needed
• Reorganized files to match new CUO file structure from .NET Core upgrade and re-symlinked files
• Added System.Text.Json nuget package
• I temporarily commented out my coarse item selection for items on the ground - I'll either improve it more or put it in a settings flag later
• Currently not using the new EmbedResourceCSharp - not sure that I'll implement using it either yet

Everything else is base CUO changes. These were all the significant issues I encountered.