feat: Implement Gogh Theme Engine with options page, theme parsing, and semantic theme derivation

We're cooked. <skull emoji>

- Added options page for YAML palette editing, live color preview, and diagnostics.
- Implemented theme engine to parse Gogh YAML palettes and derive semantic themes.
- Configured TypeScript and Vite for building the extension.
- Created new tab and popup HTML pages with corresponding scripts and styles.
- Established storage management for user configurations in Chrome storage.
- Added icons for the extension and updated manifest for MV3 compatibility.

common/settings.test.js

@@ -0,0 +1,10 @@
+import * as settingsModule from "./settings";
+
+describe("settings", () => {
+  test("has a preset configuration key", () => {      
+    const presetConfig = settingsModule.PRESET_CONFIGURATION;
+    const keys = Object.keys(presetConfig);
+    expect(keys.length).toBe(1);
+    expect(presetConfig["storageValue"]).toBe("https://clydedsouza.net");
+  });
+});