Add DacFx Generate Deploy Plan Operation (#768)

* initial adding upgrade plan

* upgrade plan request from ADS works

* now data loss operations are returned

* fixes after rebasing

* refactoring to use GenerateDeployPlan instead of UpgradePlan

* improving test

* Addressing comments

* changing abstract execute to virtual

* changed GenerateDeployPlanOepration to use Execute()

* addressing comments

* simplyfing deploy options

* adding deploy options to deploy and generate script operations

src/Microsoft.SqlTools.ServiceLayer/DacFx/DacFxOperation.cs

@@ -90,5 +90,23 @@ namespace Microsoft.SqlTools.ServiceLayer.DacFx
         }
 
         public abstract void Execute();
+
+        protected DacDeployOptions GetDefaultDeployOptions()
+        {
+            DacDeployOptions options = new DacDeployOptions
+            {
+                AllowDropBlockingAssemblies = true,
+                AllowIncompatiblePlatform = true,
+                BlockOnPossibleDataLoss = false,
+                DropObjectsNotInSource = true,
+                DropPermissionsNotInSource = true,
+                DropRoleMembersNotInSource = true,
+                IgnoreKeywordCasing = false,
+                IgnoreSemicolonBetweenStatements = false,
+                IgnoreWhitespace = false,
+            };
+
+            return options;
+        }
     }
 }