feat: new AI generated lists

I think this could be how we generate other lists

Problems:
- Knowing it's a location is good because you can do nice stuff on the
frontend.
- Same for contacts & events.

So a good alternative, is to still use this type, but perhaps change the
database such that all lists live within the new tables (lists,
image_lists). But have special tags.

This would also make it easier on the AI I think.

backend/models/lists.go

@@ -0,0 +1,49 @@
+package models
+
+import (
+	"context"
+	"database/sql"
+	. "github.com/go-jet/jet/v2/postgres"
+	"screenmark/screenmark/.gen/haystack/haystack/model"
+	. "screenmark/screenmark/.gen/haystack/haystack/table"
+
+	"github.com/google/uuid"
+)
+
+type ListModel struct {
+	dbPool *sql.DB
+}
+
+func (m ListModel) Save(ctx context.Context, userId uuid.UUID, name string, description string) (model.Lists, error) {
+	stmt := Lists.INSERT(Lists.UserID, Lists.Name, Lists.Description).
+		VALUES(userId, name, description).
+		RETURNING(Lists.ID, Lists.Name, Lists.Description)
+
+	newList := model.Lists{}
+	err := stmt.QueryContext(ctx, m.dbPool, &newList)
+
+	return newList, err
+}
+
+func (m ListModel) List(ctx context.Context, userId uuid.UUID) ([]model.Lists, error) {
+	stmt := Lists.SELECT(Lists.AllColumns).
+		WHERE(Lists.UserID.EQ(UUID(userId)))
+
+	lists := []model.Lists{}
+	err := stmt.QueryContext(ctx, m.dbPool, &lists)
+
+	return lists, err
+}
+
+func (m ListModel) SaveInto(ctx context.Context, listId uuid.UUID, imageId uuid.UUID) error {
+	stmt := ImageLists.INSERT(ImageLists.ListID, ImageLists.ImageID).
+		VALUES(listId, imageId)
+
+	_, err := stmt.ExecContext(ctx, m.dbPool)
+
+	return err
+}
+
+func NewListModel(db *sql.DB) ListModel {
+	return ListModel{dbPool: db}
+}