✨(tokens) add JS generator and re-organize the repo

Added JsGenerator which to implied to reorganize a bit the
repo in order to extract generator-specific test into specific
standalone files.

packages/tokens/src/bin/Generators/CssGenerator.spec.ts

@@ -0,0 +1,38 @@
+import path from "path";
+import fs from "fs";
+import Config from "Config";
+import { run } from "ThemeGenerator";
+import { cleanup } from "tests/Utils";
+
+jest.mock("../Paths", () => ({
+  workPath: () => __dirname,
+}));
+
+describe("CssGenerator", () => {
+  beforeAll(() => {
+    jest.spyOn(console, "log").mockImplementation(() => {});
+    cleanup(__dirname);
+  });
+
+  afterEach(() => {
+    cleanup(__dirname);
+  });
+
+  const testSelector = async (opt: string) => {
+    const cssTokensFile = path.join(__dirname, Config.tokenFilenames.css);
+    expect(fs.existsSync(cssTokensFile)).toEqual(false);
+    await run(["", "", "-g", "css", opt, "html"]);
+    expect(fs.existsSync(cssTokensFile)).toEqual(true);
+    expect(fs.readFileSync(cssTokensFile).toString()).toEqual(`html {
+\t--c--colors--primary: #055FD2;
+\t--c--colors--secondary: #DA0000;
+}`);
+  };
+
+  it("Runs with -s options.", async () => {
+    await testSelector("-s");
+  });
+  it("Runs with --selector options.", async () => {
+    await testSelector("--selector");
+  });
+});