Migrate Cypress (E2E) tests to Vite and TypeScript

This commit progresses the migration from Vue CLI to Vite (#230).

TypeScript migration:

- Convert JavaScript Cypress tests and configurations to TypeScript.
- Introduce `tsconfig.json` for Cypress, following official
  recommendation.

Test execution:

- Use Cypress CLI to run the tests.
- Rename Cypress commands to reflect official naming conventions.
- Start Vue server prior to Cypress execution, using
  `start-server-and-test` package based on official documentation.
- Remove dependency on Vue CLI plugin ((`@vue/cli-plugin-e2e-cypress`).

Configuration standardization (based on Cypress docs):

- Delete unused `plugins/` directory.
- Move test (spec) files to to the root directory.
- Add official ESLint plugin (`eslint-plugin-cypress`).

Changes for importing `vite.config.ts` into `cypress.config.ts`:

- Add TypeScript import assertations to files importing JSON files.
- Use ESM friendly way instead of `__dirname` to solve `ReferenceError:
  __dirname is not defined in ES module scrope`.

Other changes:

- Simplify comments in placeholder files.
- Create Cypress specific `.gitignore` for enhanced maintainability,
  clarity and scalability.
- Remove redundant `vue.config.cjs`.

vite-config-helper.ts

@@ -1,7 +1,8 @@
-import { resolve } from 'path';
+import { resolve, dirname } from 'path';
+import { fileURLToPath } from 'url';
 import { VITE_ENVIRONMENT_KEYS } from './src/infrastructure/Metadata/Vite/ViteEnvironmentKeys';
-import tsconfigJson from './tsconfig.json';
-import packageJson from './package.json';
+import tsconfigJson from './tsconfig.json' assert { type: 'json' };
+import packageJson from './package.json' assert { type: 'json' };
 
 export function getAliasesFromTsConfig(): Record<string, string> {
   const { paths } = tsconfigJson.compilerOptions;
@@ -9,12 +10,18 @@ export function getAliasesFromTsConfig(): Record<string, string> {
     const pathFolder = paths[pathName][0];
     const aliasFolder = pathFolder.substring(0, pathFolder.length - 1); // trim * from end
     const aliasName = pathName.substring(0, pathName.length - 2); // trim /* from end
-    const aliasPath = resolve(__dirname, aliasFolder);
+    const aliasPath = resolve(getSelfDirectoryAbsolutePath(), aliasFolder);
     aliases[aliasName] = aliasPath;
     return aliases;
   }, {});
 }
 
+export function getSelfDirectoryAbsolutePath() {
+  const filePath = fileURLToPath(import.meta.url);
+  const directoryPath = dirname(filePath);
+  return directoryPath;
+}
+
 type ViteEnvironmentKeyValues = {
   [K in typeof VITE_ENVIRONMENT_KEYS[keyof typeof VITE_ENVIRONMENT_KEYS]]: string
 };