[Migration] NPM (#1266)

* chore: add npm + vite for progressive enhancement

* fix: update Dockerfile to copy only the dist folder contents

* fix: update Dockerfile to use multi-stage build for optimized production image

* fix: correct nginx config file copy command in Dockerfile

* chore: add netlify configuration for build and redirects

* fix: add NODE_VERSION to environment in Netlify configuration

* remove wrong dist folder

* Update package.json

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* chore: split public and src

* migrating all util files from js to ts

* feat: Implement HeightmapGenerator and Voronoi module

- Added HeightmapGenerator class for generating heightmaps with various tools (Hill, Pit, Range, Trough, Strait, etc.).
- Introduced Voronoi class for creating Voronoi diagrams using Delaunator.
- Updated index.html to include new modules.
- Created index.ts to manage module imports.
- Enhanced arrayUtils and graphUtils with type definitions and improved functionality.
- Added utility functions for generating grids and calculating Voronoi cells.

* chore: add GitHub Actions workflow for deploying to GitHub Pages

* fix: update branch name in GitHub Actions workflow from 'main' to 'master'

* chore: update package.json to specify Node.js engine version and remove unused launch.json

* Initial plan

* Update copilot guidelines to reflect NPM/Vite/TypeScript migration

Co-authored-by: Azgaar <26469650+Azgaar@users.noreply.github.com>

* Update src/modules/heightmap-generator.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update src/utils/graphUtils.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update src/modules/heightmap-generator.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* feat: Add TIME and ERROR variables to global scope in HeightmapGenerator

* fix: Update base path in vite.config.ts for Netlify deployment

* fix: Update Node.js version in Dockerfile to 24-alpine

---------

Co-authored-by: Marc Emmanuel <marc.emmanuel@tado.com>
Co-authored-by: Marc Emmanuel <marcwissler@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: Azgaar <26469650+Azgaar@users.noreply.github.com>

src/utils/polyfills.ts

@@ -0,0 +1,54 @@
+// replaceAll
+if (String.prototype.replaceAll === undefined) {
+  String.prototype.replaceAll = function (str: string | RegExp, newStr: string | ((substring: string, ...args: any[]) => string)): string {
+    if (Object.prototype.toString.call(str).toLowerCase() === "[object regexp]") return this.replace(str as RegExp, newStr as any);
+    return this.replace(new RegExp(str, "g"), newStr as any);
+  };
+}
+
+// flat
+if (Array.prototype.flat === undefined) {
+  Array.prototype.flat = function <T>(this: T[], depth?: number): any[] {
+    return (this as Array<unknown>).reduce((acc: any[], val: unknown) => (Array.isArray(val) ? acc.concat((val as any).flat(depth)) : acc.concat(val)), []);
+  };
+}
+
+// at
+if (Array.prototype.at === undefined) {
+  Array.prototype.at = function <T>(this: T[], index: number): T | undefined {
+    if (index < 0) index += this.length;
+    if (index < 0 || index >= this.length) return undefined;
+    return this[index];
+  };
+}
+
+// readable stream iterator: https://bugs.chromium.org/p/chromium/issues/detail?id=929585#c10
+if ((ReadableStream.prototype as any)[Symbol.asyncIterator] === undefined) {
+  (ReadableStream.prototype as any)[Symbol.asyncIterator] = async function* <R>(this: ReadableStream<R>): AsyncGenerator<R, void, unknown> {
+    const reader = this.getReader();
+    try {
+      while (true) {
+        const {done, value} = await reader.read();
+        if (done) return;
+        yield value;
+      }
+    } finally {
+      reader.releaseLock();
+    }
+  };
+}
+
+declare global {
+  interface String {
+    replaceAll(searchValue: string | RegExp, replaceValue: string | ((substring: string, ...args: any[]) => string)): string;
+  }
+
+  interface Array<T> {
+    flat(depth?: number): T[];
+    at(index: number): T | undefined;
+  }
+
+  interface ReadableStream<R> {
+    [Symbol.asyncIterator](): AsyncIterableIterator<R>;
+  }
+}