Update GraphingCalculator Projects to allow official builds (#852)

* renamed MockGraphingImpl to GraphingImpl, updated the nuget.config to include the WindowsApps feed

* Revert nuget.config change

* Updated vcxproj files to output to the same directory regardless of configuration

* Removed outder used GenerateProjectSpecificOutputfolder instead

* revert commenting out the temporary.pfx cert in the calculator.vcxproj file

src/GraphingImpl/Mocks/MathSolver.h

@@ -0,0 +1,82 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+#pragma once
+
+#include "GraphingInterfaces/IMathSolver.h"
+
+namespace MockGraphingImpl
+{
+    class ParsingOptions : public Graphing::IParsingOptions
+    {
+    public:
+        void SetFormatType(Graphing::FormatType type) override
+        {
+        }
+    };
+
+    class EvalOptions : public Graphing::IEvalOptions
+    {
+    };
+
+    class FormatOptions : public Graphing::IFormatOptions
+    {
+    public:
+        void SetFormatType(Graphing::FormatType type) override
+        {
+        }
+
+        void SetMathMLPrefix(const std::wstring& value) override
+        {
+        }
+    };
+
+    class MathSolver : public Graphing::IMathSolver
+    {
+    public:
+        Graphing::IParsingOptions& ParsingOptions() override
+        {
+            return m_parsingOptions;
+        }
+
+        Graphing::IEvalOptions& EvalOptions() override
+        {
+            return m_evalOptions;
+        }
+
+        Graphing::IFormatOptions& FormatOptions() override
+        {
+            return m_formatOptions;
+        }
+
+        std::unique_ptr<Graphing::IExpression> ParseInput(const std::wstring& input) override
+        {
+            return nullptr;
+        }
+
+        std::shared_ptr<Graphing::IGraph> CreateGrapher(const Graphing::IExpression* expression) override
+        {
+            return nullptr;
+        }
+
+        std::shared_ptr<Graphing::IGraph> CreateGrapher() override
+        {
+            return nullptr;
+        }
+
+        std::wstring Serialize(const Graphing::IExpression* expression) override
+        {
+            return std::wstring{};
+        }
+
+        Graphing::IGraphFunctionAnalysisData IMathSolver::Analyze(const Graphing::Analyzer::IGraphAnalyzer* analyzer)
+        {
+            return Graphing::IGraphFunctionAnalysisData{};
+        }
+
+    private:
+        MockGraphingImpl::ParsingOptions m_parsingOptions;
+        MockGraphingImpl::EvalOptions m_evalOptions;
+        MockGraphingImpl::FormatOptions m_formatOptions;
+    };
+}