Update dependencies and add npm setup script

- Introduce `fresh-npm-install.sh` to automate clean npm environment
  setup.
- Revert workaround 924b326244, resolved
  by updating Font Awesome.
- Remove `vue-template-compiler` and `@vue/test-utils` from
  dependencies, they're obsolete in 2.7.
- Update anchor references to start with lower case in line with
  MD051/link-fragments, introduced by updated `markdownlint`.
- Upgrade cypress to > 10, which includes:
  - Change spec extensions from `*.spec.js` to `*.cy.js`.
  - Change configuration file from `cypress.json` to
    `cypress.config.ts`.
  - Remove most configurations from `cypress/plugins/index.js`. These
    configurations were initially generated by Vue CLI but obsoleted in
    newer cypress versions.
- Lock Typescript version to 4.6.x due to lack of support in
  unmaintained Vue CLI TypeScript plugin (see vuejs/vue-cli#7401).
- Use `setWindowOpenHandler` on Electron, replacing deprecated
  `new-event` event.
- Document inability to upgrade `typescript-eslint` dependencies because
  `@vue/eslint-config-typescript` does not support them. See
   vuejs/eslint-config-typescript#60, vuejs/eslint-config-typescript#59,
   vuejs/eslint-config-typescript#57.
- Fix `typescript` version to 4.6.X and `tslib` version to 2.4.x,
  unit tests exit with a maximum call stack size exceeded error:

  ```
    ...
    MOCHA  Testing...
    RUNTIME EXCEPTION  Exception occurred while loading your tests
    [=========================] 100% (completed)
    RangeError: Maximum call stack size exceeded
      at RegExp.exec (<anonymous>)
      at retrieveSourceMapURL (/project/node_modules/source-map-support/source-map-support.js:174:21)
      at Array.<anonymous> (/project/node_modules/source-map-support/source-map-support.js:186:26)
      at /project/node_modules/source-map-support/source-map-support.js:85:24
      at mapSourcePosition (/project/node_modules/source-map-support/source-map-support.js:216:21)
    ...
  ```

  Issue has been reported but not fixed, suggested solutions did not
  work, see evanw/node-source-map-support#252.
- Update `vue-cli-plugin-electron-builder` to latest alpha version. This
  allows upgrading `ts-loader` to latest and using latest
  `electron-builder`. Change `main` property value in `package.json` to
  `index.js` for successful electron builds (see
  nklayman/vue-cli-plugin-electron-builder#188).

docs/tests.md

@@ -72,7 +72,7 @@ Common aspects for all tests:
 - Vue CLI plugin  [`e2e-cypress`](https://github.com/vuejs/vue-cli/tree/dev/packages/@vue/cli-plugin-e2e-cypress#readme) configures E2E tests.
 - Test names and folders have logical structure based on tests executed.
 - The structure is following:
-  - [`cypress.json`](./../cypress.json): Cypress configuration file.
+  - [`cypress.config.ts`](./../cypress.config.ts): Cypress configuration file.
   - [`./tests/e2e/`](./../tests/e2e/): Base Cypress folder.
     - [`/specs/`](./../tests/e2e/specs/): Test files named with `.spec.js` extension.
     - [`/plugins/index.js`](./../tests/e2e/plugins/index.js): Plugin file executed before loading project.