Add automated release workflow and update configs

Introduced a GitHub Actions workflow to automate release creation upon pushes to the main branch, enhancing CI/CD efficiency. Updated the pull request workflow to support manual triggers. Adjusted Jest's coverage thresholds from 80% to 70% to reflect current testing standards. Added "types" field in package.json for TypeScript declarations. Created an empty README.md.

jest.config.js

@@ -13,10 +13,10 @@ module.exports = {
     coverageReporters: ['text', 'lcov'],
     coverageThreshold: {
         global: {
-            branches: 80,
-            functions: 80,
-            lines: 80,
-            statements: 80,
+            branches: 70,
+            functions: 70,
+            lines: 70,
+            statements: 70,
         },
     },
 };