Replace Exec task with Unzip task (#267)

* Replace Exec task with Unzip task

* Removes dependency on having unzip in path

* Removing two properties not supported on Linux and MacOS

* CI build failed

Author: henrikrxn

src/Wasmtime.csproj

@@ -163,12 +163,10 @@ The .NET embedding of Wasmtime enables .NET code to instantiate WebAssembly modu
       StandardOutputImportance="Low"
       StandardErrorImportance="Low"
     />
-    <Exec
+    <Unzip
       Condition="('$(Packing)'=='true' Or '%(Wasmtime.Copy)'=='true') And %(Wasmtime.FileExtension) == 'zip' And !Exists('$(BaseIntermediateOutputPath)$(ReleaseFileNameBase)-%(Wasmtime.Arch)-%(Wasmtime.OS)-c-api')"
-      Command="unzip $(ReleaseFileNameBase)-%(Wasmtime.Arch)-%(Wasmtime.OS)-c-api.%(Wasmtime.FileExtension)"
-      WorkingDirectory="$(BaseIntermediateOutputPath)"
-      StandardOutputImportance="Low"
-      StandardErrorImportance="Low"
+      SourceFiles="$(BaseIntermediateOutputPath)\$(ReleaseFileNameBase)-%(Wasmtime.Arch)-%(Wasmtime.OS)-c-api.%(Wasmtime.FileExtension)"
+      DestinationFolder="$(BaseIntermediateOutputPath)"
     />
 
     <!-- The content here is specifically for packing -->