feat(github actions): added publish action

scripts/set-version.ts

@@ -0,0 +1,13 @@
+import { readJson, writeJson } from 'fs-extra';
+
+const libPackage = './libs/ng2-file-upload/package.json';
+const mainPackage = './package.json';
+
+(async () => {
+  const version = await readJson(mainPackage).then(json => json.version);
+  const packageJson = await readJson(libPackage);
+  if (packageJson.version) {
+    packageJson.version = version;
+  }
+  await writeJson(libPackage, packageJson, { spaces: 2 });
+})();