Cypress snapshot test

cypressSnapshotTest.ts

describe("buttons", () => {
  it("can change class", () => {
    cy.getById("label_class").select("class1");
    dot_mode_coordinates_2.forEach((coordinate) => {
      cy.get("canvas").click(coordinate.x, coordinate.y);
    });
    cy.get("canvas").matchImageSnapshot("multi_class");
  });
}