add e2e utils

projects/nshmp-apps/cypress/utils/index.ts

+export * from './dashboard.utils';
+export * from './gmm-lib.utils';
+export * from './hazard-lib.utils';
+export * from './nshmp-lib.utils';
+export * from './nshmp-template.utils';
+export * from './plot-lib.utils';
+export * from './utils';

projects/nshmp-apps/cypress/utils/utils.ts

+export function hasDownloadedFile(filename: string) {
+  const downloadsFolder = Cypress.config('downloadsFolder');
+  const file = `${downloadsFolder}/${filename}`;
+
+  cy.readFile(file).should('exist').should('have.length.above', 1);
+}
+
+export function setInput(inputClass: string, value: string) {
+  cy.get('nshmp-template-control-panel')
+    .find(inputClass)
+    .find('input')
+    .scrollIntoView()
+    .should('be.visible')
+    .clear()
+    .type(value)
+    .should('have.value', value);
+}
+export function selectMatOption(value: string) {
+  cy.get('.cdk-overlay-container')
+    .find('mat-option')
+    .each(option => {
+      if (option.attr('ng-reflect-value') === value) {
+        cy.wrap(option).click();
+      }
+    });
+}