delete binary tor, include powershell script to fetch tor, change cwtch/ffi Tor binary location

fetch-tor-win.ps1

@@ -0,0 +1,6 @@
+
+Invoke-WebRequest -Uri https://www.torproject.org/dist/torbrowser/10.0.16/tor-win32-0.4.5.7.zip -OutFile tor.zip
+
+if ((Get-FileHash tor.zip -Algorithm sha512).Hash -ne '2b7d683f036d0fec149f1d2bdfcf5b7ef4c337005a2b685c056b00047fdb2b57d4c25b8559ad7ef5c7a030b273934be82a9f83ef6e391f5d7d13d8d6c83e8048' ) { Write-Error 'tor.zip sha512sum mismatch' }
+
+Expand-Archive -Path tor.zip -DestinationPath Tor

lib/cwtch/ffi.dart

@@ -82,7 +82,7 @@ class CwtchFfi implements Cwtch {
       home = envVars['HOME'];
     } else if (Platform.isWindows) {
       home = envVars['UserProfile'];
-      bundledTor = "windows\\Tor\\tor.exe";
+      bundledTor = "Tor\\Tor\\tor.exe";
     }
     var cwtchDir = path.join(home, ".cwtch/dev/");
     print("cwtchDir $cwtchDir");