Feature/c sharp interface (#200)

* 🚧 Adjust to Single Project

Shift project towards new csproj for C# project and away from Shared Setup.

Remove the shared project setup and start with .net standard 2.0 and .net framework 4.8 with the goal of adding more pieces including .net core. 

Fix tests

* 🙈 Ignore Test with Memory Address Issues

* ✨ Create Release Workflow

* ✨ Add links to README

* ♻️ Update Make

* 🚀 Add so, dylib, and dll to Release

* respect configuration when loading binaries

* use truncated manifest

replace the hardcoded manifest with one that is not affected by #176

* update readme and build tasks

* Remove msys package target

* try run netstandard tests

* only run netstandard tests on macos for now

* add chaum pedersen to C interface

* Add C# chaum pedersen proofs

* update version numbers

* rename x86 file

Co-authored-by: Keith Fung <keith.robert.fung@gmail.com>
Co-authored-by: Keith Fung <keith.fung@infernored.com>

Author: AddressXception

.github/workflows/release.yml

@@ -115,6 +115,7 @@ jobs:
         run: |
           dotnet build -c Release
           dotnet pack -c Release --version-suffix "v${{ steps.sha.outputs.sha_short }}"
+          rename build/libs/msvc/Win32/src/Release/electionguard.dll electionguard_x86.dll
       - name: Get Release Version
         id: get_version
         uses: greenygh0st/net-proj-release-version@v2