Introduce retry mechanism for npm install in CI/CD

This commit addresses occasional pipeline failures caused by transient
network errors during dependency installation with `npm ci`. It
centralizes the logic for installing npm dependencies and introduces a
retry mechanism.

The new approach will attempt `npm ci` up to 5 times with a 5-second
interval between each attempt, thereby increasing the resilience of
CI/CD pipelines.

This commit adds a new script `npm-install.js` with `npm run
install-deps` command to centralize npm dependency installation process
throughout the project. Separate testing of scripts to a separate
workflow.

It removes unused `install` dependency from `package.json`.

package.json

@@ -16,6 +16,7 @@
     "test:cy:run": "start-server-and-test \"vite build && vite preview --port 7070\" http://localhost:7070 \"cypress run --config baseUrl=http://localhost:7070\"",
     "test:cy:open": "start-server-and-test \"vite --port 7070 --mode production\" http://localhost:7070 \"cypress open --config baseUrl=http://localhost:7070\"",
     "lint": "npm run lint:md && npm run lint:md:consistency && npm run lint:md:relative-urls && npm run lint:eslint && npm run lint:yaml",
+    "install-deps": "node scripts/npm-install.js",
     "icons:build": "node scripts/logo-update.js",
     "check:desktop": "vitest run --dir tests/checks/desktop-runtime-errors --environment node",
     "check:external-urls": "vitest run --dir tests/checks/external-urls --environment node",
@@ -43,7 +44,6 @@
     "cross-fetch": "^4.0.0",
     "electron-progressbar": "^2.1.0",
     "file-saver": "^2.0.5",
-    "install": "^0.13.0",
     "liquor-tree": "^0.2.70",
     "markdown-it": "^13.0.1",
     "npm": "^9.8.1",