Add node modules and new code for release (#57)

Co-authored-by: taakleton <taakleton@users.noreply.github.com>

node_modules/jest-serializer/README.md

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+# jest-serializer
+
+Module for serializing and deserializing object into memory and disk. By default, the `v8` implementations are used, but if not present, it defaults to `JSON` implementation. Both serializers have the advantage of being able to serialize `Map`, `Set`, `undefined`, `NaN`, etc, although the JSON one does it through a replacer/reviver.
+
+## Install
+
+```sh
+$ yarn add jest-serializer
+```
+
+## API
+
+Three kinds of API groups are exposed:
+
+### In-memory serialization: `serialize` and `deserialize`
+
+This set of functions take or return a `Buffer`. All the process happens in memory. This is useful when willing to transfer over HTTP, TCP or via UNIX pipes.
+
+```javascript
+import {deserialize, serialize} from 'jest-serializer';
+
+const myObject = {
+  foo: 'bar',
+  baz: [0, true, '2', [], {}],
+};
+
+const buffer = serialize(myObject);
+const myCopyObject = deserialize(buffer);
+```
+
+### Synchronous persistent filesystem: `readFileSync` and `writeFileSync`
+
+This set of functions allow to send to disk a serialization result and retrieve it back, in a synchronous way. It mimics the `fs` API so it looks familiar.
+
+```javascript
+import {readFileSync, writeFileSync} from 'jest-serializer';
+
+const myObject = {
+  foo: 'bar',
+  baz: [0, true, '2', [], {}],
+};
+
+const myFile = '/tmp/obj';
+
+writeFileSync(myFile, myObject);
+const myCopyObject = readFileSync(myFile);
+```