admin soft delete functionality, also fixed google sign in when user doesn't have first and last name

backend/models/ForumPost.js

@@ -56,6 +56,22 @@ const ForumPost = sequelize.define('ForumPost', {
     type: DataTypes.ARRAY(DataTypes.TEXT),
     allowNull: true,
     defaultValue: []
+  },
+  isDeleted: {
+    type: DataTypes.BOOLEAN,
+    defaultValue: false
+  },
+  deletedBy: {
+    type: DataTypes.UUID,
+    allowNull: true,
+    references: {
+      model: 'Users',
+      key: 'id'
+    }
+  },
+  deletedAt: {
+    type: DataTypes.DATE,
+    allowNull: true
   }
 });