Add existing codebase

pkg/brainbuffer/task/repository.go

@@ -0,0 +1,16 @@
+package task
+
+import (
+	"brainbuffer/pkg/brainbuffer/repository"
+)
+
+type Repository interface {
+	Save(task *Task) (int64, error)
+	FindByID(id int64) (*Task, error)
+	FindAllByUser(userId string, page repository.Page) (Tasks, error)
+	DeleteByID(id int64) error
+}
+
+func NewRepository() Repository {
+	return &inMemoryRepository{}
+}