feat: create function to add token

src/metamask/addToken.ts

@@ -0,0 +1,19 @@
+import { Page } from 'puppeteer';
+
+export const addToken = (page: Page) => async (tokenAddress: string): Promise<void> => {
+  await page.bringToFront();
+
+  const addTokenButton = await page.waitForSelector('.add-token-button > button');
+  await addTokenButton.click();
+
+  const addressInput = await page.waitForSelector('#custom-address');
+  addressInput.type(tokenAddress);
+
+  await page.waitForTimeout(4000);
+
+  const nextButton = await page.waitForSelector(`button[data-testid='page-container-footer-next']:not([disabled])`);
+  await nextButton.click();
+
+  const footerButtons = await page.$$('footer > button');
+  await footerButtons[1].click();
+};