feat(kanban): save done bucket with project instead of bucket

src/models/bucket.ts

@@ -12,7 +12,6 @@ export default class BucketModel extends AbstractModel<IBucket> implements IBuck
 	projectId = ''
 	limit = 0
 	tasks: ITask[] = []
-	isDoneBucket = false
 	position = 0
 	count = 0
 	

src/models/project.ts

@@ -23,6 +23,7 @@ export default class ProjectModel extends AbstractModel<IProject> implements IPr
 	position = 0
 	backgroundBlurHash = ''
 	parentProjectId = 0
+	doneBucketId = 0
 	
 	created: Date = null
 	updated: Date = null