Migrated solution to .net core 3.1. Publishing exe for the first time.

OneDriveArchiver/obj/OneDriveArchiver.csproj.nuget.dgspec.json

@@ -45,6 +45,20 @@
           ],
           "assetTargetFallback": true,
           "warn": true,
+          "downloadDependencies": [
+            {
+              "name": "Microsoft.AspNetCore.App.Runtime.win-x64",
+              "version": "[3.1.7, 3.1.7]"
+            },
+            {
+              "name": "Microsoft.NETCore.App.Runtime.win-x64",
+              "version": "[3.1.7, 3.1.7]"
+            },
+            {
+              "name": "Microsoft.WindowsDesktop.App.Runtime.win-x64",
+              "version": "[3.1.7, 3.1.7]"
+            }
+          ],
           "frameworkReferences": {
             "Microsoft.NETCore.App": {
               "privateAssets": "all"
@@ -52,6 +66,11 @@
           },
           "runtimeIdentifierGraphPath": "C:\\Program Files\\dotnet\\sdk\\3.1.401\\RuntimeIdentifierGraph.json"
         }
+      },
+      "runtimes": {
+        "win-x64": {
+          "#import": []
+        }
       }
     }
   }