build: migrate build system to Vite and test runner to Vitest & Remove depracated husky usage (#2703)

- Replace Webpack with Vite for faster client bundling and HMR.
- Migrate tests from Jest to Vitest and update configuration.
- Update Web Worker instantiation to standard ESM syntax.
- Implement Env utility in `src/core` for safe, hybrid environment
variable access (Vite vs Node).
- Refactor configuration loaders to remove direct `process.env`
dependencies in shared code.
- Update TypeScript environment definitions and project scripts for the
new toolchain.
- Remove the [depracated usage of the
husky](https://github.com/typicode/husky/releases/tag/v9.0.1).

## Description:

migrate build system to Vite and test runner to Vitest & Remove
depracated husky usage

## Please complete the following:

- [X] I have added screenshots for all UI updates
- [X] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [ ] I have added relevant tests to the test directory
- [X] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

wraith4081

---------

Co-authored-by: evanpelle <evanpelle@gmail.com>

tests/client/graphics/layers/EventDisplayAlliance.test.ts

@@ -1,20 +1,20 @@
-jest.mock("lit", () => ({
+vi.mock("lit", () => ({
   html: () => {},
   LitElement: class {},
 }));
 
-jest.mock("lit/decorators.js", () => ({
+vi.mock("lit/decorators.js", () => ({
   customElement: () => (clazz: any) => clazz,
   query: () => () => {},
   state: () => () => {},
   property: () => () => {},
 }));
 
-jest.mock("lit/directive.js", () => ({
+vi.mock("lit/directive.js", () => ({
   DirectiveResult: class {},
 }));
 
-jest.mock("lit/directives/unsafe-html.js", () => ({
+vi.mock("lit/directives/unsafe-html.js", () => ({
   unsafeHTML: () => {},
   UnsafeHTMLDirective: class {},
 }));