Simplify using a bind

Signed-off-by: James Sturtevant <jsturtevant@gmail.com>

Author: jsturtevant

templates/content/wasi-cli/.template.config/template.json

@@ -16,26 +16,9 @@
   },
   "symbols": {
     "platform": {
-      "type": "generated",
-      "generator": "switch",
-      "datatype": "string",
-      "parameters": {
-        "evaluator": "C++",
-        "datatype": "string",
-        "cases": [
-          {
-            "condition": "(OS == \"Windows_NT\")",
-            "value": "windows"
-          },
-          {
-            "condition": "(OS == \"Linux\")",
-            "value": "linux" 
-          },
-          {
-            "value": "linux" 
-          }
-        ]
-      }
+      "type": "bind",
+      "binding": "env:OS",
+      "defaultValue": "linux"
     }
   },
   "postActions": [

templates/content/wasi-cli/wasi-cli.csproj

@@ -15,7 +15,7 @@
 
   <ItemGroup>
     <PackageReference Include="BytecodeAlliance.Componentize.DotNet.Wasm.SDK" Version="0.5.0-preview00008" />
-    <PackageReference Condition="'$(platform)' == 'windows'" Include="runtime.win-x64.microsoft.dotnet.ilcompiler.llvm" Version="10.0.0-alpha.1.24573.1" />
+    <PackageReference Condition="'$(platform)' == 'Windows_NT'" Include="runtime.win-x64.microsoft.dotnet.ilcompiler.llvm" Version="10.0.0-alpha.1.24573.1" />
     <PackageReference Condition="'$(platform)' == 'linux'" Include="runtime.linux-x64.microsoft.dotnet.ilcompiler.llvm" Version="10.0.0-alpha.1.24573.1" />
   </ItemGroup>
 </Project>