feat: Convert package to ESM (#575)

BREAKING CHANGE: Convertir the package to ESM might lead to issues when building

.gitignore

@@ -1,6 +1,8 @@
 .DS_Store
 node_modules
 dist
+esm
+cjs
 .nyc_output
 coverage
 .vscode

jest.config.cjs

@@ -0,0 +1,28 @@
+/** @type {import('ts-jest/dist/types').InitialOptionsTsJest} */
+module.exports = {
+  testEnvironment: 'jsdom',
+  moduleNameMapper: {
+    '\\.(css|less|sass|scss)$': '<rootDir>/__mocks__/styleMock.js',
+    '\\.(gif|ttf|eot|svg)$': '<rootDir>/__mocks__/fileMock.js',
+    '@0xsquid': 'identity-obj-proxy'
+  },
+  transform: {
+    '^.+\\.(t|j)sx?$': [
+      '@swc/jest',
+      {
+        jsc: {
+          target: 'es2020',
+          transform: {
+            react: {
+              runtime: 'automatic'
+            }
+          }
+        }
+      }
+    ]
+  },
+  transformIgnorePatterns: [
+    'node_modules/?!axios|@dcl/hashing',
+  ],
+  setupFilesAfterEnv: ['<rootDir>/src/tests/setupTests.ts']
+}