On main: create_project

app/graphql/mutations/projects/create_project.rb

@@ -0,0 +1,31 @@
+module Mutations
+    module Projects
+      class CreateProject < BaseMutation
+        graphql_name 'CreateProject'
+
+        argument :name, String, required: true
+        argument :description, String, required: false
+
+        field :project, Types::ProjectType, null: false
+        field :errors, [String], null: false
+
+        # new
+
+        def resolve(name:, description: nil, user_id)
+          project = Project.new(name: name, description: description, user_id: user_id)
+
+          if project.save
+            {
+              project: project,
+              errors: []
+            }
+          else
+            {
+              project: nil,
+              errors: project.errors.full_messages
+            }
+          end
+        end
+      end
+    end
+  end