Fix issue with project failing to load when project name has '.' character

If the project name contain '.' character, while generating the data model file an extra space is added in namespace e.g. "Pixel.Automation.live. in" when project is named "live.in". This causes data model compilation to fail. This might be an issue with roslyn api.

Author: Nfactor26

src/Pixel.Automation.AppExplorer.ViewModels/PrefabBuilder/NewPrefabViewModel.cs

@@ -92,7 +92,7 @@ private void ValidateProperty(string propertyName)
             {
                 case nameof(PrefabName):
                     ValidateRequiredProperty(nameof(PrefabName), PrefabName);
-                    ValidatePattern("^([A-Za-z]|[._ ]){4,}$", nameof(PrefabName), PrefabName, "Name must contain only alphabets or ' ' or '_' and should be atleast 4 characters in length.");
+                    ValidatePattern("^([A-Za-z]|[_ ]){4,}$", nameof(PrefabName), PrefabName, "Name must contain only alphabets or ' ' or '_' and should be atleast 4 characters in length.");
                     if (this.applicationDescriptionViewModel.PrefabsCollection.Any(p => p.PrefabName.Equals(PrefabName)))
                     {
                         AddOrAppendErrors(nameof(PrefabName), $"Prefab with name {PrefabName} already exists for application {this.applicationDescriptionViewModel.ApplicationName}");                  

src/Pixel.Automation.Designer.ViewModels/Screen/NewProjectViewModel.cs

@@ -96,7 +96,7 @@ public void ValidateProjectName(string projectName)
         {
             ClearErrors(nameof(Name));
             ValidateRequiredProperty(nameof(Name), projectName);
-            ValidatePattern("^([A-Za-z]|[._ ]){4,}$", nameof(Name), projectName, "Name must contain only alphabets or ' ' or '_' and should be atleast 4 characters in length.");
+            ValidatePattern("^([A-Za-z]|[_ ]){4,}$", nameof(Name), projectName, "Name must contain only alphabets or ' ' or '_' and should be atleast 4 characters in length.");
             if(!IsNameAvailable(projectName))
             {
                 this.AddOrAppendErrors(nameof(Name), "An application already exists with this name");