change on npm package ignore and jest config to publish to npm

Author: Armnajafi

.npmignore

@@ -1,2 +1,8 @@
-src
-*.ts
+src/
+tests/
+.github/
+.vscode/
+.gitignore
+tsconfig.json
+jest.config.js
+*.log

jest.config.js

@@ -0,0 +1,8 @@
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+  testMatch: ['**/tests/**/*.test.ts'],
+  collectCoverage: true,
+  coverageDirectory: 'coverage',
+  collectCoverageFrom: ['src/**/*.ts', '!src/**/*.d.ts']
+};