Moved System.IO references from DMO classes to Static Helpers

Removed nugetSource from pipeline
Removed more comments
Created Static Classes for most DMO / Controller Classes
Push ConfigurationManager.AppSettings to controller
Align Tests with other Projects

Fab2ApprovalSystem/Misc/PartsRequestHelper.cs

@@ -0,0 +1,49 @@
+using System.IO;
+
+using Fab2ApprovalSystem.DMO;
+using Fab2ApprovalSystem.Models;
+
+namespace Fab2ApprovalSystem.Misc;
+
+public class PartsRequestHelper {
+
+    public static void SendEmailNotification(AppSettings appSettings, string username, string subject, int prNumber, string toEmail, string emailTemplate) {
+        string senderName = "Parts Request";
+
+        EmailNotification en = new(appSettings, subject);
+        string[] emailparams = new string[5];
+        emailparams[0] = prNumber.ToString();
+        emailparams[1] = prNumber.ToString();
+        emailparams[2] = GlobalVars.hostURL;
+        emailparams[3] = "Parts Request";
+        emailparams[4] = username;
+        string userEmail = toEmail;
+
+        en.SendNotificationEmail(emailTemplate, GlobalVars.SENDER_EMAIL, senderName, userEmail, null, subject, emailparams);
+    }
+
+    public static void AttachSave(AppSettings appSettings, PartsRequestDMO partsRequestDMO, int prNumber, int userId, string fullFileName, Stream stream) {
+        // Some browsers send file names with full path.
+        // We are only interested in the file name.
+        var fileName = Path.GetFileName(fullFileName);
+
+        string prFolderPath = appSettings.AttachmentFolder + "PartsRequest\\" + prNumber.ToString();
+
+        DirectoryInfo di = new(prFolderPath);
+        if (!di.Exists)
+            di.Create();
+
+        var physicalPath = Path.Combine(prFolderPath, fileName);
+
+        using (FileStream fileStream = new(physicalPath, FileMode.Create, FileAccess.Write)) {
+            stream.CopyTo(fileStream);
+        }
+        PartsRequestAttachment attach = new() {
+            PRNumber = prNumber,
+            FileName = fileName,
+            UserID = userId,
+        };
+        partsRequestDMO.InsertAttachment(attach);
+    }
+
+}